Vol. 5 (1999), issue 2 (December) ============================================================= Editor-in-Chief: Michael Witzel, Harvard University Managing Editor: Enrica Garzilli, University of Perugia Assistant Editor: Makoto Fushimi, Harvard University Technical Assistance: Ludovico Magnocavallo, Milano Editorial Board: Madhav Deshpande University of Michigan, Ann Arbor Harry Falk Freie Universitaet Berlin Yasuke Ikari Kyoto University Boris Oguibenine University of Strasbourg Asko Parpola University of Helsinki ------------------------------------------------------------------------------------------- email: ejvs-list@shore.net witzel@fas.harvard.edu http://www1.shore.net/~india/ejvs European mirror: http://www.asiatica.org or http://www.asiatica.org/publications/ejvs/ (C) With the authors and the editors ISSN 1084-7561 ------------------------------------------------------------------------------------------- CONTENTS Editor's Note (M.Witzel) Articles: B. N. Narahari Achar, On Exploring the Vedic Sky with Modern Computer Software M. Witzel, The Pleiades and the Bears viewed from inside the Vedic texts EDITOR's NOTE How could we better close out this second millennium CE than by a paper on astronomy and calendar calculations? This is, just like calendar reform, a perennial topic, and certainly so the matter addressed by the paper of Narahari Achar. Dating the Vedas with the help of astronomical observations referred to in the texts has engaged both scholars and the interested public for more than two centuries by now. Not always quietly and peacefully, and, as I will contend in a second brief paper appended to N. Achar's, not even justifiably so. For, too much emphasis seems to have been laid on taking the Vedic statements literally, as if they were made from a modern observatory. On the other hand, it is usually forgotten that even fairly primitive observations, such as marking the rising and setting points of the sun over the course of little more than one year, can set up a basic solar calendar, which then can be elaborated by a lunar one over the course of a little more than 5 years (coincidence of full moon and solar new year), or if wished, by a little more than 18 years (by observing the highest and lowest points in the course of the moon). For an easily comprehensible introduction to these questions, chapter three of V. Aveni's book 'Sky watchers of Ancient Mexico' (Austin, Univ. of Texas Press, 1980) is recommended; many of the relevant points for the Vedic period have also been described by A. Parpola in his book 'Deciphering the Indus script' (Cambridge 1994). A. Aveni explains in simple terms how the sky can be observed "with the naked eye" and how basic astronomical facts can be determined from this. An important innovation is that today everyone can check the correctness of the statements made in the two papers below by taking a look at some software described by N. Achar. (For Macintosh users, there is Voyager II and similar products.) No longer do we have to trust long and complicated calculations for some items that interest us, while we would have to go to our colleagues in astronomy for others that have not been made. The crux remaining, however, is the interpretation of Vedic passages, as will be seen below. Just like the astronomical facts they cannot taken at 'first sight', that is, in astronomy forgetting about the changes due to precession (see below), or in Vedic studies forgetting about changes in the meaning words, concepts and cultural background: such observations have to be seen w i t h i n the framework of other Vedic star lore, as discussed below. One cannot, as has so frequently been done even in the most recent books and papers, just quote an isolated sentence, e.g. the one from the ZB discussed below, and build a complicated theory on it, especially if a closer reading of the passage in question does not bear out the original contention. *** Technical note: Thanks to the Asiatica Association (Italy) our journal is, as of this week, also mirrored in Europe at: http://www.asiatica.org or: http://www.asiatica.org/publications/ejvs/ Our thanks are due to E. Garzilli and L. Magnocavallo for providing this kind assistance! I also thank all contributors and editors for their work and assistance, and I conclude with my best wishes to all readers for a happy and prosperous New Year, Century and Millennium! M. Witzel (Dec. 24, 1999) ------------------------------------------------------------------------------------------- ARTICLES B. N. Narahari Achar University of Memphis, Memphis TN 38152 On Exploring the Vedic Sky with Modern Computer Software I. Introduction As has been observed recently by Witzel [1], the Vedic night sky has not received the full attention it deserves, and many Vedic passages, which allude to astronomical phenomena, have remained not yet fully understood. It is obvious that the sky as it appears to us now is quite unlike the sky that the Vedic people saw, and extensive calculations would have to be carried out before any meaningful comparison of the current sky with the stellar information in the Vedic passages can be made. However, in recent years there has become commercially available some very powerful astronomy software, the so-called Planetarium Software. These software products can generate and display on a personal computer, with a high degree of reliability, millions of stars and other heavenly objects as seen from any given location on earth and on any given date, all at the click of a mouse. These are used as tools in astronomical explorations with both conventional and automated telescope applications for determining when and in which part of the sky a particular object becomes visible. These computer programs, with the capability to generate and display the night sky at any date and place, can, therefore, be effectively used as research tools to generate and display the night sky as it was seen by the Vedic people. The Vedic passages describing the night sky can be studied in conjunction with such displays. It is to be expected that such an effort would lead to a better understanding of those Vedic passages. It is the purpose of this report to illustrate the application of a planetarium program, SkyMap Pro [2], as a research tool [3] to study the Vedic sky in conjunction with Vedic passages, using as example some passages from zatapatha brAhmaNa (ZB). Another powerful program, PancAng2, developed by M. Yano and M. Fushimi [4] can calculate the tithi and nakSatra for any date from 3100 BC onwards and is based on the sUrya siddhAnta. This turns out to be a valuable tool in studying the Vedic rituals. Here it is used for identifying dates with a particular nakSatra, kRttika. II. The passages in zatapatha brAhmaNa In the second brAhmaNa, the nakSatra brAhmaNa, of the first adhyAya of the second kANda of ZB, occur the following lines: kRttikAsv agnI AdadhIta / etA vA agninakSatraM yat kRttikAH / tad vai saloma yo agninakSatre agnI AdadhAtai / tasmAt kRttikAsv AdadhIta // (II. 1. 2.1) "He may set up the two fires under kRttikAs; for they, the kRttikAs are doubtless Agni's asterism, so that if he sets up his fires under Agni's asterism, (he will bring about) a correspondence (between his fires and the asterism): for this reason he may set up his fires under the kRttikAs" (tr. Eggeling [5]) ekaM dve trINi / catvArIti vA anyAni nakSatrANi / athaitA eva bhUyiSThAH yat kRttikAH tad bhUmAnam evaitad upaiti/ tasmAt kRttikAsv AdadhIta // (II. 1. 2.2) "Moreover, the other lunar asterisms (consist of) one, two, three or four (stars), so that kRttikAs are the most numerous (of asterisms): hence he there by obtains an abundance. For this reason he may set up his fires under the kRttikAs" (tr. Eggeling [5]) etA ha vai prAcyai dizo na cyavante / sarvANi ha vA anyAni nakSatrANi prAchyai dizo cyavante / tat prAcyam evAsyaitad dizy Ahitau bhavataH / tasmAt kRttikAsv AdadhIta // (II. 1. 2.3) "And again they do not move away from the eastern quarter, whilst the other asterisms do move from the eastern quarter. Thus his (two fires) are established in the eastern quarter: for this reason he may set up his fires under the kRttikAs. (tr. Eggeling [5]) The context is a discussion about the suitable time and nakSatra under which it would be most auspicious to perform agnyAdhAna, the establishment of the ritual fires for the first time by a householder. It is proposed that the new householder should establish the traditional gArhapatya and AhavanIya fires on the day of kRttikA nakSatra. For, the presiding deity of kRttikA is agni, the kRttikAs alone consist of many stars and they never swerve from the east. He who performs agnyAdhAna under kRttikA , therefore, is blessed with abundance, and gets his household fires firmly established in the east. However, in the very next section arguments are presented against this proposition; for, the kRttikAs were married to the saptarSis who rise only in the north and hence are constantly separated from their spouses who rise in the east. "amI hy uttarAhi saptarSayaH udyanti pura etAH". (II.1.2.4) This portends the same fate to befall the new householder, who establishes the household fires for the first time under kRttikA. Hence, the day of kRttikA is not to be considered suitable for performing this ritual. But counter arguments are presented later in the section, and finally, it is argued that kRttikAs are the most auspicious for agnyAdhAna; but, some other nakSatras, which may also be considered auspicious are suggested. III. Dikshit's theory The lines given above are obviously of great astronomical importance and Shankar Balkrishna Dikshit [6] was perhaps the first one to use them to propose a date for ZB. Although many others [7 - 10] have discussed this issue in the literature since then, none expresses more eloquently than Dikshit himself [11]: "The statement that kRittikAs never deviate from the east implies that these stars always rise in the east, i.e., they are situated on the [celestial] equator or that their declination is zero. At present they do not appear to rise exactly in the east, but at a point north of east; this happens because of the precessional motion of the equinox. Assuming 50" as annual motion, the time when the junction star of the kRttikAs had zero declination, comes to be 3068 years before Zaka and even 150 years earlier i.e., the approximate time of the commencement of Kali era, if 48" be adopted as the precessional annual motion. Calculating the declination of some other stars in this age, we find that the northernmost star of rohiNI group, southern three of the hasta group, two from anUrAdhA, one from jyeSThA, and one from azvinI were situated near the equator, only some one star from the hasta group (if at all) could possibly have been situated exactly on the equator, otherwise none. The statement about kRttikAs rising in the east is made in the present tense and they can not always do so because of precessional motion of equinoxes. In our time we find them rising to the north of east and they used to rise to its south in 3100 BS [before Zaka]. From this it can be inferred that the corresponding portion in zatapatha brAhmaNa was written about 3100 years before the Zaka ea." Pingree [12] has argued that the phrase "never swerve from the east" cannot be taken to mean rise "heliacally precisely at the east point" as was done by Dikshit, who deduced that this could have occurred only when the Pleiades were on the equator in about 3000 BC. Pingree vehemently counters, "unfortunately for this theory [of Dikshit], parts of the nakSatras, hasta, viSAkhe, and perhaps zravaNa were also on the equator in 3000 BC." According to Pingree, this fact would there by contradict the claim in zatapatha brAhmaNa that only the kRttikAs 'never swerve from the east'; hence, he doubts whether that phrase can bear the meaning attributed to it by Dikshit. One of the purposes of the present report is to establish the relative merits of these two claims by observing the sky-view generated by using the software "SkyMap Pro", in conjunction with the program "PancAng2". These views of the sky correspond to the latitude of Delhi and represent the sky as the Vedic people themselves might have seen. IV. The sky at present The SkyMap Pro software takes into account the precessional motion of the earth's rotation axis and produces the images of the entire sky at any location on earth and at any date from 4000 BC to 8000 AD. It is a very sophisticated mapping tool, which shows all the heavenly objects above the horizon at any given location at any given time within certain limits. It can display stars as faint as magnitude sixteen, and zoom in to a practically unlimited extent to produce area maps with greater details to any desired degree. Furthermore, the celestial coordinates, right ascension and declination [13], and a host of other astrophysical data can be determined for any object for the epoch corresponding to a given date. The local rising and setting times for the object can also be determined. Figure 1.[delhi1.gif] shows the sky as it appears at Delhi on September 1, 1999 AD, looking in the direction of east at 10:50 pm, a few minutes after the moon rise. The arc at the bottom represents the horizon. The coordinates in the map are the azimuth and altitude, with zenith at the top. The azimuth angle of 90 degrees marks the East Point. Only stars brighter than magnitude 5 are displayed to avoid clutter. According to panchanga, it is kRSNa saptamI and kRttikA nakSatra on this day. As sAyaNa explains, 'yasmin dine candreNa samyujyante tasmin dine,' it is the day when kRttikAs are joined with the moon. We take the Pleiades as kRttikAs and eta-tauri as the representative for the group. One can see in the picture the waning (almost third quarter) moon and kRttikA just above the horizon, and both are considerably to the north of east. The kRttikAs are displayed in an Area Map in figure 2 [delhi2.gif], which is an expanded view of the region whose boundaries are marked by the equatorial coordinates as shown. Figure 2 resolves the stars of the Pleiades group. TaittirIya brAhmaNa (TB 3.1.4.1, and earlier on, TS 4.4.5.1, MS 2.8.13, KS 40.4) give the names of the stars belonging to the group as ambA, dulA, nitatnI, abhrayantI, meghayantI, varSayantI, and cupuNikA (MS variant bulA for dulA, and stanayantI for varSayantI). There is a spread of about 30 minutes in the declination coordinates of different members of the group. From the display in figure 1 it is determined that the moon has a declination of 13 degrees and 3 minutes, and an azimuth of 76 degrees and 43 minutes. Eta-tauri has a declination of 24 degrees and 6 minutes and an azimuth of 65 degrees. Thus it is clear that the moon rises at a point about 13.25 degrees north of east, and eta-tauri rises at a point about 25 degrees north of east. In fact, the latter is further north than the sun. This is exactly as described by Dikshit, with reference to the current position of kRttikA. Figure 3 [delhi3.gif] shows a view to the north and shows the saptarSis rising at a point east of north. At the present time then both saptarSis and kRttikAs rise in the north, in agreement with Dikshit [12]. V. kRttikAs on the celestial equator Using the software SkyMap Pro, we can determine the date when eta-tauri was at a position of zero declination. At that time it would be exactly on the equator and would rise exactly at the East Point. Since there is a spread of about 30 minutes in declination of the different members of the Pleiades group, the other members will not be technically exactly on the equator at the same time and hence would not rise exactly at the east. However, this small spread in declination would have been hardly noticeable. In fact, for a couple of centuries on either side of this date, the kRttikA group would still be seen as rising in the east. Figure 4 [delhi4.gif] shows the view of the sky for Delhi on July 8, 1200 BC. According to pancAng2, It is zrAvaNa aSTamI in kRSNa pakSa, and it is kRttikA nakSatra. The picture shows the view of the sky to the east soon after moonrise and kRttikA is also seen just above the horizon. On this date eta-tauri has a declination of 9 degrees and 41minutes, and rises at a point about 10 degrees north of east. Obviously, the event described in ZB occurred much earlier than 1200 BC. Figure 5 [delhi5.gif] is a sky map corresponding to August 16, 2927 BC, when kRttikAs (actually, just eta-tauri) rise exactly in the east. With kRttikAs rising in the east, the Vedic people watching the sky would declare, "etA ha vai prAcyai dizo na cyavante." VI. Other nakSatras on the equator Pingree has questioned the interpretation, that the phrase "never swerve from the east" means "they always rise exactly at the East Point". For, according to Pingree, parts of nakSatras, hasta, vizAkha, and perhaps zravaNa would also be on the equator on this date and this would contradict ZB's claim that only kRttikAs "never swerve from the east." We have generated sky maps for Delhi for this date, August 16, 2927 BC, facing east and separated by six hours in time interval so that the entire sky for right ascension from 0-23 hours near the equator region could be presented. Table 1 presents, as obtained from these maps, a list of stars, which are brighter than magnitude 4 and lie close to the equator by 2 degrees or less. The table also gives the values of their magnitude, right ascension and declination for the epoch 2927 BC. It is seen that there are about a dozen stars close to the equator. Of these, three are 30 minutes or less away from the equator, and four more are less than a degree away. There are additional four stars at about 1.5 degrees and the last one is about 2 degrees away from it. Table 1. Stars located close to the equator in 2927 BC (epoch: 2927 BC) Stars Magnitude Right Ascn. Declination 41-Arietis 3.70 22h 31m 1d 28m epsilon-Pegasi 2.50 17h 38m -1d 23m theta-Aquilae 3.40 15h 56m -1d 7m zi-Serpentis 3.60 13h 14m 1d 21m delta-Scorpi 2.50 11h 38m 0d 57m sigma-Librae 3.40 10h 46m 0d 23m nu-Hydrae 3.30 6h 46m 1d 12m lambda-Hydrae 3.80 6h 6m 1d 54m pi-Hydrae 3.50 9h 53m -0d 10m alpha-Hydrae 2.20 5h 21m 0d 48m beta-Corvi 2.80 8h 29m 1d 5m epsilon-Corvi 3.20 8h 7m 0d 41m Eridanus 4.00 4h 18m -1d 27m Based on Pingree's own scheme of identifying stars [14], hasta, vizAkha, and zravaNa correspond to delta-Corvi, iota-Librae, and alpha- Aquilae respectively. From the star maps, it is determined that none of these stars are really close to the equator in 2927 BC, and hence, are not found among those listed in table 1. In fact, the declinations of these stars are 7 degrees 49 minutes, 5 degrees 38 minutes, and 9 degrees 41 minutes respectively. Therefore, these stars would rise noticeably far from the East Point. None of the stars in table 1 can be identified with the junction stars or the yogatArAs themselves. It is true however, that there are stars in table 1, which may be considered to be other members of the groups associated with some junction stars, i.e., asterisms. For hasta, it is beta-Corvi, with a declination 1 degree 5 minutes, and epsilon- Corvi, with a declination of just 41minutes. For vizAkha, it may be sigma-Librae with a declination of mere 23 minutes; and/or delta-Scorpi with a declination of 57 minutes, and perhaps uttara proSThapada, epsilon-Pegasi, with a declination of -1 degree 23 minutes. Hence, these could also be described as "rising exactly in the east", or "not swerving from the east." Except for these, no other stars in table 1 can be regarded as belonging to the traditional list of nakSatras. Pingree's point (namely, ZB's statement that only kRttikAs never swerve from the east cannot have the meaning that they rise exactly in the east) would appear to be well taken since, hasta, vizAkha and even uttara proSThapada, are also on or near the equator, just as the kRttikAs. However, this objection does not really have any efficacy when one examines carefully the context under which that statement is made, namely, choosing the most auspicious nakSatra for performing agnyAdhAna. If the ritual of agnyAdhAna is to be done under kRttikAs because, "they never swerve from the east", then, Pingree's point would be equivalent to stating that the same ritual could be performed equally well under hasta, vizAkha, and even uttara proSThapada. For, they also would "never swerve from the east." In fact, hasta is considered as an alternate auspicious star for agnyAdhAna, as discussed later in the same section in ZB. AzvalAyana sUtra (II.1. 10) permits both vizAkha and uttara proSThapada for the same ritual. Pingree might have scored a point, had these nakSatras been denied the status of being auspicious for performing agnyAdhAna. While "never swerving from the east" may be a criterion for selection as a suitable nakSatra for the ritual, there may be other reasons why kRttikAs are preferred, such as the presiding deity being agni. Thus the phrase "never swerve from east" cannot mean anything other than "rising heliacally exactly at the East Point", for, ZB itself declares: "udyanti pura etA[H]" 'they rise in the east.' On this point, sAyaNa also says in his exegesis "zuddha-prAcyam evodyanti" "they rise in the true east." VII. saptarSis in the north It was mentioned earlier that at the present time all members of group the saptarSis, except alpha-Ursa majoris rise (and set) in the north as observed from Delhi (figure 3). However, in 2927 BC, it can be seen in figure 6 [delhi6.gif], that Thuban is the pole star (later on called dhruva)and that all members of the saptarSis are circumpolar and are quite to the north. Hence the saptarSis would neither rise nor set. We have verified that the saptarSis remain circumpolar at Delhi from about 4500BC to about 100 BC, at which time only one star of the group, eta-Ursa majoris, becomes non-circumpolar and rises and sets. It is only at about 600 AD that a second member of the group becomes non-circumpolar at Delhi. If they are all circumpolar as seen in Delhi at about 3000 BC, what is the meaning of "they rise in the north"? In order to see at least one of them rise and set, one would have to observe from a place south of Delhi. In fact, beta-Ursa-majoris, (declination: +66 degrees 8 minutes) could be observed as rising or setting from a place whose latitude is about 24degrees N, compared to Delhi's 28 degrees 22 minutes N. One would have to be at latitude of about 10 degrees N to observe all of saptarSis to rise and set. Then what is the real meaning of amI hy uttarAhi saptarSayaH udyanti pura etA[H] (ZB II.1.2.4)? Eggeling translates it as "for the latter, the seven RSis, rise in the north, and they (the kRttikAs) in the east." We feel that the confusion arises because, "udyanti" is associated with both "saptarSayaH" and "etAH." The sentence should be broken as AmI hy uttarAhi saptarSayaH / udyanti pura etAH /, associating udyanti with etAH only. The first part would simply state "amI hy uttarAhi saptarSayaH (santi)". As sAyaNa explains, 'Ahi ca dUre', (PS 5.3.37) iti. -Ahi is a pratyaya, uttarAhi would mean 'dUradeze uttaradigbhAge' 'at a far off place in the north'. Thus, ZB (II.1.2.4) would mean "for these seven Rsis indeed (stay) far to the north and they (the kRttikAs) rise in the east." There is even a hint of the circumpolar nature of the saptarSis, by the absence of 'rising'! VIII. Some comments on the computer software SkyMap Pro and Pancang2 agree with each other remarkably well even though one is based on sUrya siddhAnta and the other is modern astronomical software. For example, on spot-checking the occurrence of new moons and full moons over a period from 3100 BC to 3000 AD, there is a difference of utmost a day (sometimes two). This difference arises mainly because of the convention for assigning tithi at sunrise and also because the program Pancang2 does not give the time when a tithi or nakSatra begins or ends. Moreover, there are "kSaya" and "vRddhi" tithis. Nevertheless, this difference did not cause any serious difficulty in selecting the days of kRttikA nakSatra. There are a number of planetarium-type software available for PCs: The Sky, Red Shift, and Starry Night, just to mention a few. While they may perform more or less equally well for telescopic applications, there were some difficulties in using them for the present application. For example, on extrapolating to BC years, there was general agreement with the coordinates of stars, but not for the phases of the Moon. In fact, there was a difference of about eight days for full moon between the SkyMap Pro and The Sky in the year 2500 BC. In the case of Red Shift and Starry Night, some times the star map did not display the correct coordinates for the stars, even though the calculated coordinates were correct. IX. Conclusions A simulation using the software SkyMap Pro in conjunction with Pancang2 has been used to verify that the statements in ZB about the kRttikAs never swerving from east and about saptarSis rising in the north point to events that could have been observed around 3000 BC. The fact that there are other nakSatras besides kRttikAs which also do not deviate from the east appears to have been recognized, for, these other nakSatras have been suggested in the zAstras as alternate choices for performing the agnyAdhAna ritual. The simulation also helps to understand better the statement about the saptarSis being in the far off north. X. Acknowledgement This work has been supported in part by a University of Memphis Faculty Research Grant. Abbreviations ZB zatapatha brAhmaNa PS paNiNi sUtra References [1]. Witzel, M., "Looking for the Heavenly Casket", Electronic Journal of Vedic Studies, 1, 2,(1995). A longer version of this paper has appeared in Studien zur Indologie und Iranistik, 20; cf. also the discussion of the Milky Way and several asterisms in Vedic times in "Sur le chemin du ciel", Bulletin des etudes indiennes 2, 1984. [2]. Marriott, C., SkyMap Software, 9 Severn Road, Culcheth, Cheshire WA3 5ED, UK (1993-1998). The latest version is called SkyMap Pro. [3]. Achar, Narahari B. N., "The age of the zatapatha brAhmNa: a reexamination of Dikshit's theory", Indian Journal of History of Science, (in press). This paper, based on an older version of the software SkyMapV2.2, argues erroneously for a site of observation far south of Delhi and is superseded by the present work. [4]. Yano, M. and Fushimi, M., Pancang2, a program based on sUrya siddhAnta, available by ftp://ccftp.kyoto-su.ac.jp/pub/doc/sanskrit/ [5]. Eggeling, J., The zatapatha brAhmaNa According to the MAdhyandina School, Motilal Banarasidass, (Delhi, 1963), Part I, pp. 282-283. [6]. Dikshit, S. B., "The Age of the zatapatha brAhmaNa", Indian Antiquary, 24, 245-246, (1895). [7]. Chakravarty, A. K., "The Asterisms" in History of Oriental Astronomy, (ed.) Swarup, G., Bag, A. K., and Shukla, K. S., Cambridge University Press, (Cambridge, 1987), pp. 23-28. [8]. Kaye, G. R., "The Nakshatras and Precession", Indian Antiquary, 50, 44-48, (1921). [9]. Kansara, N. M., "The Vedic Sources of vedAGga jyotiSa", in Issues in Vedic Astronomy and Astrology, (ed.) Pandya, H., Dikshit, S., and Kansara, N. M., Motilal Banarasidass Publishers Pvt. Ltd., (Delhi, 1992), pp. 273-296. [10]. Sarkar, R., "Vedic Literature vis-a-vis Mathematical Astronomy" in History of Oriental Astronomy, (ed.) Swarup, G., Bag, A. K., and Shukla, K. S., Cambridge University Press, (Cambridge, 1987), pp. 29-32. [11]. Dikshit, S. B., Bharatiya Jyotish Sastra, Government of India Press, (Calcutta, 1969), pp. 128-129. [12]. Pingree, D., "Mulapin and Vedic Astronomy" in Dumu-E2-Dub-ba-a, (ed.) Behrens, H., Loding, D., and Roth, M. (Philadelphia, 1989), pp. 439-445. [13]. The coordinates right ascension and declination are the analogs of longitude and latitude, respectively, and are fixed on the celestial sphere. Right ascension is measured in hours (h.), minutes (m), and seconds (s), and has a range of zero to twenty-three hours. Declination is measured in degrees (d), minutes (m), and seconds (s), and has a range from -90 degrees to + 90 degrees, with the 0 degree being on the equator. The coordinates of a star when expressed in right ascension and declination are the same for all observers on earth. In contrast, azimuth and altitude, both measured in degrees, minutes and seconds are "local" coordinates for a given star, and differ from observer to observer. Azimuth is measured from the North Point, for which it is zero all the way around to 360 degrees in a full circle along the horizon. Thus, it is 90 degrees for East Point, 180 degrees for the South Point, and 270 degrees for the West Point. Altitude is measured from the horizon to the zenith, which is 90 degrees. [14]. Pingree, D. and Morissey, P., "On the Identification of the yogatArAs of the Indian nakSatras", Journal for the History of Astronomy, xx, 99-119, (1989). *** *** *** Michael Witzel Harvard University The Pleiades and the Bears viewed from inside the Vedic texts N. Achar and his predecessors of the past hundred-odd years, definitely have a point when they state that several nakSatra ('moon houses') can be viewed as being exactly situated on the eastern horizon at their various times of rising in the course of the night (and of the year), and that Zatapatha brAhmaNa 2.1.2.1 seems to describe the time when the Pleiades (kRttikAH) were rising due east (at c. 2900 BCE). That means the Pleiades were rising in the east at nightfall at fall equinox, while the sun rises against their background at the spring equinox (heliacal rising at vernal equinox). The question here will be how to interpret this passage and how to place it against the background of Vedic star lore. [1] Investigating these basic facts is of special importance as a wide range of claims has been made for the Vedas, from the observation of planets (see, however, M. Yano, forthcoming) to that of precession, the 'wobbling' of the celestial north pole (now close to our Pole Star, Polaris) around the northern region, on a path that takes some 28,000 years for one turn. Understanding this particular item is important for any evaluation: the situation in 2900/2300 BCE is no longer the one we can observe today. Stars on/near the ecliptic (our Greek-Babylonian zodiac signs, and the Vedic nakSatras) have moved on -- for example the point where the sun rises at equinox on March 21 -- in a generally east-northeastern direction, by some 47*. Our equinox now closer to the sign of Aquarius, compared to the situation in 2900 BCE when it was in Aries, close to Taurus . Such detailed astronomical knowledge which can be gained only by very long term observations over the course of many hundred if not thousands of years, is not to be expected, a priori, for the Vedic period. [2] The Vedic statements about the rising point of certain nakSatras thus must be viewed with circumspection, and most importantly of all, the ancient situation can by no means directly be compared with our modern night sky. On the other hand, it is important to note that the situations of 2900 or 2300 BCE do not differ that much from the one in 1000 BCE, as the situation of 2900 BCE differs from ours in 2000 CE, some 5000 years later! This point is usually lost in the discussion, and therefore stressed below. The Vedic texts usually, though not exclusively, speak about the nakSatras in connection with the moon. The moon, supposed to live with his 27(?) wives (KS 11.3) or 33 wives (TS 2.3.5.1-3), that is the goddesses in the nakSatras. However, he loved rohiNI (Aldebaran in Taurus) best and stayed only with her; he therefore was punished by the yakSma disease of 'consumption' (i.e. the waning of the moon). Since then, he has to dwell each night of the month in another 'moon house' (nakSatra). The same situation, of course, occurs when we look at the position of the full moon over the course of the year: it is in one of the 27 or 28 nakSatras. (The sun, due to its opposition to the moon, always rises in the same nakSatras where the moon sets, but six months earlier/later. The heliacal rising in kRttikAH of the sun thus took place in c. 2927 BCE at the vernal equinox in March. The Vedic texts, however, are more concerned with establishing the lunar calendar for sacrifices and festivals). [4] II. The rising point of the KRttikAs, the Pleiades While the ZB quotation discussed by N. Achar and his predecessors indeed seems to point to a situation where kRttiKA nakSatra was situated at true east at the equinox, i.e. in 2927 BCE. However, the exact wording of the sentence just indicates that the kRttikAs do not move away (na cyavante) from the east (prAcyai dizaH). The Pleiades, just like any other nakSatra close to the ecliptic, do of course rise in the east (during the course of one night or of the year), move upwards towards the south and set in the west. However, the Pleiades, even when the gradual changes effected by precession are taken into account, move very little indeed from the eastern direction over many centuries after the above date. [5] This is important. From 2900 to c. 1500, a period framing the whole of the Indus civilization, (2600-1900, thus with a margin of a few centuries before and after it), and even from 1500 to 500 (the usual date of the Vedic period), the kRttikAs indeed were situated close to the equator (see below). We should not, as is always done, compare the (pre-)Vedic situation of 2900 BCE with today's, instead, we must investigate the difference between the starting point of this system at c. 2900 BCE, in the early copper/bronze age, [6] with that of the ZB, which is, after all, an iron age text. The iron age starts in India at c. 1200 BCE at the earliest, but the general linguistic, spiritual, social and political developments of the ZB points to a time frame shortly before the lifetime of the Buddha (around the middle of the millennium, traditionally 563-483 BCE, or even only around 400 BCE). The same is indicated the internal chronology of the Vedic texts, e.g. by quotations in ZB from the RV (a text without iron); the RV is first followed by the Yajurveda saMhitA mantras (iron is attested) and their slightly later explicatory prose (in the same Yajurveda texts), to whose discussions ZB often answers; these texts are, again, followed by the earlier and later brAhmaNas (aitareyaBr, jaiminIya Br., vAdhUla Br, baudhAyana ZS etc.) with whom ZB shares many cultural and linguistic characteristics. Indeed, the very phrase prAcyai dizo na cyavante (also found in BZS) gives itself away as a formulation of the post-Rgvedic period. The genitive/ablative in -ai of stems in -I does not occur before the taittirIya saMhiTa (and a few cases in zaunaka atharvaveda); it is typical for the central north Indian (TB) and eastern texts (such as ZB) of the brAhmaNA period, while it disappears in post-Vedic Sanskrit (Witzel 1989). [7] In short, we have a statement, perhaps first made in c. 2900 BCE, in an iron age text that is close to the middle of the first millennium BCE (750-600 BCE?) However, both Pingree and Achar do not undertake the important test, a countercheck to investigate how the Vedic people might have looked at the night sky of the very late Vedic period ZB belongs to. D. Pingree, justifiably in is context, only looks at the situation in c. 2900 BCE and rightly indicates that several nakSAtras other than the Pleiades also are on the equator and thus "do not swerve from the east" when their heliacal rising point is observed in the course of a year and when it is compared with the many nakSatras that are situated more off the equator. On the other hand, N. Achar has indeed noticed that the Pleiades do not divert much from the eastern direction for the next few centuries, [8] but one needs to follow through for a late Vedic text such as ZB (composed around 750-600 BCE). On checking with similar astronomical software (Voyager II), we observe that during the years from 3000 BCE down to 500 BCE, i.e. close to the approximate date of ZB, the Pleiades move very little from the eastern direction at their position at Spring Full Moon. At vernal equinox in 2900 BCE the kRttikAs were at 90* Azimuth, i.e. due east according to Achar, while at 1527 BCE they were at 81* 43'', at 1027 BC at 74* 47", and at 500 BCE at 77* 38". These data were calculated for the Pleiades star Maia on Full Moon day; today they are off from the point of the vernal equinox (near lambda Piscis, phi Aquarii) by some 54* 23'; that means they are seen in the northeast. The 'traditional' Vedic situation, thus, holds out for long enough that ZB still can speak of the Pleiades as 'rising in the east' -- maybe not true east, but 'east enough' at some 8-13* off true east. It must be underlined that the text actually does not speak of 'true east', -- that is only sAyaNa's interpretation (14thc. CE), i.e. of someone living just some 500 years before our own times. Instead, the obervation made above, just as the contemporary ones of the BaudhayAyana ZrautasUtra 27.5 (cf. mAnava ZS 10.1.1.3) refer to certain prominent nakSAtras or even to their stars, all of which allow to fix the eastern direction for a particular ritual purpose, i.e. the orientation of a hut on the offering ground. III. East, North East, South East This point becomes important when we investigate what "east" actually means in the Vedic texts. First of all, and obviously so, the eastern direction (pUrvA diz) of the sky, that is true east. However, the matter is more complex. While the older Vedic texts do not speak of intermediate directions of the sky (northeast, southeast, etc.), this distinction begins to emerge in the post-RV texts (avAntaradizA MS, KS, TS, avAntaradeza ZB, antardeza AV, upadizA KS). One of the earliest cases is AV 15.5.1 sqq. where the southeastern region is described as tasmai prAcyA dizo 'antaradezAD ... "from the intermediate direction of the East", the SW as 'dakSiNAyA dizo...', etc. [10] Again, we can decide the question on basis of contemporary texts. By the time of the ZB 11.6.1.2 we get such circumscriptions as: etayoH pUrvayor uttaram anv avAntaradezam vrajatAT "then go to the upper (northern) one of the two eastern intermediate regions!" [11] We should translate (ava-)antaradeza as 'intermediate region' (between N and NE, NE and E, etc.) and distinguish it from *avAntara-diz 'intermediate direction' (NE, etc.). The northern and the southern avAntaradezas, situated north and south of true east, form the eastern deza (later, and nowadays, meaning 'province, country'). In other words, Vedic 'east' comprises the area between northeast and southeast, or to be more specific, the area (starting from E = 90*), between 90* and +45* (northeast), and -45* (southeast). I therefore submit that all positions of the Pleiades (kRttikAH) at vernal equinox during the Vedic period (c. 1500-500 BCE) fell well within this limit; they are indeed much closer to true east than the northeast (-45*) which is reached only in c. 650 CE. In short, the kRttikAs did not swerve (much, 8-13*) from the eastern direction (pUrva diz) and remained well within the eastern deza and its two avAntaradeza (NE-SE)! [12] However, the ZB passage has another surprise in store, when viewed against the background of the extant Vedic texts. IV. The Seven RSis Curiously, discussants of the ZB passage in question have not paid close enough attention to the phrase a few lines later, ZB 2.1.2.4, which speaks of the Seven RSis, the Great Dipper (Ursa maior, the great bear/wain). The Seven RSis are said to have been called RkSAH "formerly" (saptarSIn u ha sma vai pura rkSA ity AcakSate). This name of the Big Dipper is found just once before ZB, at the RV 1.24.10. [13] This evidence strongly indicates that ZB authors, after the passage of up to a thousand years after the RV, still had a good 'traditional' memory of the rare, old Rgvedic name. Indeed the name is much older, it is (pre-?)IE, cf. Latin Ursa maior the great bearess', Greek arktos 'the bearess' with her cubs, etc. [14] So, why can the ZB authors not have transmitted another piece of traditional knowledge, that about the exact rising point of the kRttikAs, -- astronomical lore that dates back to the third millennnium BCE? [15] V. Conclusion The combination of the two observations from the same text, --actually from the same section of ZB-- are powerful arguments for giving a straightforward, and not a very involved astronomical interpretation to both passages in ZB 2.1.2 : that is, the retention of traditional (pre-)Rgvedic lore about the saptarSis (Ursa maior) and the observation that the kRttikAs do not swerve from, i.e. rise, in the east or closely nearby for a very long period (c. 2900 BCE down to even 500 BCE and beyond). The first is about a traditional rising point of the Pleiades at a certain moment in time, the memory of which was preserved; [16] the second, a traditional name of an important asterism, the marker of the northern direction, 'up there' (uttara, Witzel 1972), where the (great) bear(s) are found. Both passages are traditional priestly lore, orally transmitted over many centuries; they were used in ZB at the precise moment when a particularly important ritual [17] was discussed and performed, that is, the first setting up of one's sacred fires. In sum, it simply cannot be maintained, with the confidence B. Dikshit once had and that some of his successors still have, "that the corresponding portion in zatapatha brAhmaNa was written about 3100 years before the Zaka era" (i.e. about 3043 BCE). First, there was no S. Asian writing at the time, except for the enigmatic Indus script which has not been read with confidence, a script that certainly did not reflect Vedic Sanskrit (see the last number of EJVS). Second, the very form of the sentence (using the middle/late Vedic form prAcyai) betrays the phrase as having been composed in iron age time, and, with the rest of the ZB, fairly close to the time of the Buddha. The original observation about the Pleiades, however, can go back to the third millennium BCE. Retention of such outdated data in ritual is not unusual; to use a contemporary item, the time for Annual Meeting of the American Oriental Society depends on the date for the Christian Easter festival, which is determined as the first Sunday after the Full Moon in Spring (after March 21) and thus is based on a remnant of the lunar calendar; the basis for this date ultimately goes back much further in time, to the date of the ancient Hebrew Passover festival. [18] VI. Some further notes. Additionally, a few stray remarks may be appended that are connected with the preceding discussion. During the Indo-Iranian period, the 'bears' (RkSAH) were not, of course, always visible in the night sky and rise from a partial position below the horizon (especially if we think of a BMAC or of a still more northern location): that would not be possible even for most of the Panjab, and is only possible South of Delhi, below c. 30* N. The present tense of ud i, udyanti, however, which would point, in some scholars' opinion, to c. 3000 BCE, is easily explained, when we actually look at the Big Dipper when it appears in the early evening even today; it moves towards the north pole, surpasses it and sets in the west, (see sky maps in Witzel 1996). This observation solves N. Achar's problem of the Ursa Maior "rising" in the North. It actually rises, when it gets dark, in the north (nowadays with its easternmost stars from below the horizon, for late Vedic times cf. ZB 13.8.1.9); Ursa maior then turns upwards, and is, after a few hours actually higher than the north pole (now situated at c. 30* in the southern Panjab/Delhi)... So why can the Vedic texts not speak of 'ud-yanti', especially so, as the north is also called ut-tara ('situated on the side of ud 'up'), and as the northern direction includes all regions from to 45* = NE to 90* = E and 315* =NW. Generally speaking, the use of the actual term 'to rise' (ud i) is not strange at all, as the stars close to the north pole move 'upwards' towards the pole (thus northwards), while the stars not so close to the pole, such as the kRttikAs and other nakSatras on the equator, move in the opposite direction, towards the zenith (thus southwards). This explains the brAhmaNa story of a separation between the seven RSis and their six wives (the kRttikAs), while only arundhatI (Alcor in Ursa maior) remains with them (cf. Parpola 1994). Abbreviations AV atharvaveda saMhitA BZS baudhAyana zrautasUtra JB jaiminIya brAhmaNa KS kaTha saMhitA MS maitrAyaNi saMhitA MZS mAnava zrautasUtra RV Rgveda saMhitA TS taittirIya saMhitA SB SaDviMza brAhmaNa VAdhB vAdhUla brAhmaNa VS vAjasaneyi saMhitA ZB zatapatha brAhmaNa YV yajurveda FOOTNOTES 1. It has to be noted that lore about the (heliacal) rising point of the kRttikAs, Sirius, etc. is old; cf. for example Hesiod (Erga 383 sqq.) about the rising of the Pleiades as indicator for the right time to plough, or Sirius as the harbinger of the yearly flood of the Nile in old Egypt; for such data in Indo-Iranian and Indo-European, cf. Witzel 1984. 2. Unless some very old and outdated astronomical observations had been transmitted, unchanged, over a long period of time and were then actively compared with contemporaneous observations. 3. Cf. also TS 3.4.7.1, KS 18.14, VS 18.40, ZB 9.4.1.9, SB 3.12, etc. 4 . For a summary of older opinions on the origin of nakSatra system (Babylonian, Chinese, Arab) see Macdonell and Keith, 1912, s.v. nakSatra, p. 409-431; for a recent discussion (origin in the Indus Civilization), see Parpola 1994, p. 201-206, 241-246. Needless to say, the concept can be older than either the Indus or the Babylonian and Chinese astronomy and may go back to the often surprisingly sophisticated observations of the Neolithic. 5. As N. Achar, indeed, also mentions in passing, and as I have done in a paper that was to be published in India in a popular science journal some two years ago, along with some papers by specialists on the Veda and the Indus civilization; this project seems to have been abandoned by now; my paper will now be published in a volume on the Aryan question, ed. by Bryant /Patton (forthcoming). 6. For hints of an old system starting with rohiNI (Aldebaran), see Macdonell and Keith 1912 and Parpola 1994. -- Incidentally, many of the names of the kRttikAs are 'foreign' i.e. ambA, dulA (bulA, MS), nitatnI, cupuNIkA, while some others are connected with rain, e.g. abharayantI, meghayantI (stanayantI, MS), varSayantI (cf. Parpola 1994; used as names of bricks in the Agnicayana) -- which fits very well the location of KS, MS, TS in Haryana/U.P., where the rainy season starts only in mid July (Delhi ~ MS, at c. 1000 BCE). A 'rainy' kArttika at c. 2900 BCE, however, makes no sense for the Indus civilization (in the Greater Panjab and Sindh), where there is no real monsoon. At any rate, even for Delhi, the rainy season begins in mid- July and ends in September/October. (Note also the relationship between the Pleiades star cupunIkA (YV) and ni-cumpUNa in RV, KS, MS, ni-caGkuNA in TS, apparently 'effusion, bubbling, water spirit'). 7. Further, the text must be viewed in context; other nakSatras (rohiNI, mRgazIrSa, phalgunI, hasta, citra in ZB, citra/svAti, zravaNa in BZS, etc.) are discussed for various reasons, some of which include the usual 'etymology' based ones of brAhmaNa style discussions. It is, however, significant that some of the nakSatras identified by Pingree as being on the equator (hasta, viSAkhe, zravaNa) are preferred by BZS (hasta, zravaNa); cf. also the list of equatorial nakSatras mentioned by Achar, above in section III (rohiNI, hasta, anurAdhA, jyeSThA, azvinI), and the partly corresponding list of ZB (rohiNI, hasta). Clearly, equatorial nakSatras were preferred. 8. Cf. the position of the kRttikAs and the full moon on his map of Delhi as late a July 1200 BCE. 9. It must be underlined that ZB, BZS, MZS 10.1.1.3 have alternative dates for the setting up of the sacred fires, e.g. BZS 27.5 (KarmAnta) "The kRttikAs do not move from the eastern quarter; after their complete appearance he should measure (the offering hut), that is one possibility. After the appearance of zravaNa (Alpha of Aquila), that is the next; between citrA (Ear of corn, in Virgin) and svAti (Arcturus), that is one more." They are all located on the equator, and could serve as alternative points which clearly provide options three or six months later than the (ancient) equinox. However, these dates have nothing to do with the rules established for the kSatriya and vaizya in ZB: spring for Brahmin, Summer for kSatriya, Rainy Season for the vaizya. This does not coincide with the BZS locations. [10] The oldest cases of intermediate directions are found in the explicatory prose of the Yajurveda saMhiTAs, with e.g. uttarataH purastAt prAyaNa- 'the northeastern entry' (of the hut), MS 3.6.1: 60.13. 11. Actual compounds such as N-E, S-W are late Vedic, e.g. SB 2.10 prAg-udAk-prAyaNa, etc. For details on all types of circumscriptions and actual compounds for the intermediate directions, see Witzel 1972: 179-180 12. Note also the Old Iranian system as preserved in the Avesta, with four karsuuar 'climes' covering the same areas as in Vedic, i.e. from NE-SE, SE-SW, SW-NW, NW-NE, but with the later(?) additions by an eastern and a western sector, see Witzel (forthc. in Muenchener Studien zur Sprachwissenschaft, 2000). 13. The RV line is quoted once more, verbatim, in another -very late - Vedic text, TA 1.11.2: RSayaH saptAtriz ca yat | sarve 'trayo agastyaz ca | nakSatraiH zaMkRto 'vasan | atha savituH zyAvAzvasyAvartikAmasya | amI ya RkSA nihItAsa uccA | The last pAda seems to refer back to RV verse 7 which describes the nyagrodha tree. For the date of TA 1 see Witzel 1972. 14. This seems to reflect stone age mentality, cf. Schadewaldt 1970, Scherer 1953; later on, with the advance of technology, the 'Bear' was also called 'wagon, Wain' (Witzel 1972). In Avestan, the asterism is called haptO iringa (acc.) 'the seven signs', which would be Vedic *sapta *lingA(ni), but the identification with the Seven (Rgvedic) RSis is only Indo-Aryan and not even found everywhere in Vedic yet (see above). 15. Whether its source is Indo-European star lore, as is the case of the RkSAH ('the bears' = Ursa maior), cf. Scherer 1953 and Schadewaldt 1970, or whether it stems from the observations of the Indus people as Parpola 1994 maintains, or whether from some other possible source, e.g. the Bactria Margiana Archaeological Complex (2100-1800/1700BCE) which seems to have influenced both the Old Iranians as well as the Indo-Aryans (for linguistic evidence, see the last number of EJVS). 16. Though for practical purposes and for other classes such as the kSatriya and vaizya, the rising points of other asterisms were used as well, see above note 9 and cf. the treatment in ZB 2.1.2, BSS, MSS etc. 17. Note that the agnyAdheya is, from the point of view of the development of the solemn zrauta ritual and its texts, a late ritual. 18. Note for example that our present Gregorian calendar is only some five hundred years old (and was not accepted in Russia until well after the October revolution, which actually took place in November); it was preceded by the Julian calendar which was in force for some 1500 years. Caesar's reform was instituted because the date of the Roman calendar had become out of tune with the seasons, just as a kRttikA date for spring would be nowadays. REFERENCES Aveni, A. Sky Watchers of Ancient Mexico. Austin: Univ. of Texas Press 1980 Macdonell, A.A. and A. B. Keith, Vedic Index. 1912, Repr. New Delhi: Motilal Banarsidass 1967 Parpola, A. Deciphering the Indus script. Cambridge: Cambridge University Press 1994. Schadewaldt, W. Griechische Sternsagen. Muenchen: dtv 1970 Scherer, A. Gestirnnamen bei den indogermanischen Voelkern. Heidelberg: Winter 1953 Witzel, M. Jav. apAxedra. Muenchener Studien zur Sprachwissenschaft 30, 1972, 163-191. --- Sur le chemin du ciel. Bulletin des Etudes indiennes, Vol. 2, 1984, 213-279 ---, Tracing the Vedic dialects. Colette Caillat (ed.), Dialectes dans les litte'ratures indo-aryennes. Paris 1989, p. 97-264 ---, Looking for the heavenly casket, Fs. P. Thieme, Studien zur Indologie und Iranistik 20, 1996 (shorter version in EJVS 1.1, 1995) ================================================================================ COLOPHON Electronic Journal of Vedic Studies ============================= Editors: Michael Witzel witzel@fas.Harvard.edu Enrica Garzilli garzilli@shore.net Makoto Fushimi fushimi@fas.Harvard.edu Madhav Deshpande MMDESH@UMICH.EDU Harry Falk FALK@FUB46.ZEDAT.FU-BERLIN.DE Yasuke Ikari ikari@zinbun.kyoto-u.ac.jp Boris Oguibenine boris@atacama.ehess.fr Asko Parpola APARPOLA@KATK.HELSINKI.FI Technical Assistance: Ludovico Magnocavallo ludo@shore.net, ludo@sumatrasolutions.com EJVS-list@shore.net http://www.shore.net/~india/ejvs --------------------------------------------------------------------------- (C) COPYRIGHT NOTICE The Materials in this journal are copyrighted. ONE COPY OF THE ARTICLES AND REVIEWS MAY BE MADE FOR PRIVATE STUDY ONLY. ALL COPIES MADE FOR WHATEVER PURPOSE MUST INCLUDE THIS COPYRIGHT NOTICE. THE TEXTS MAY NOT BE MODIFIED IN ANY WAY NOR MAY THEY BE REPRODUCED IN ELECTRONIC OR OTHER FORMAT WITHOUT THE WRITTEN PERMISSION OF THE EDITOR-IN-CHIEF. EJVS-LIST@shore.net THE ABOVE MATERIALS WERE FIRST PUBLISHED IN THE ELECTRONIC JOURNAL OF THE ABOVE MATERIALS WERE FIRST PUBLISHED IN THE ELECTRONIC JOURNAL OF VEDIC STUDIES. ALL INQUIRIES ARE TO BE SENT TO THE EDITORS. -- iti parisamaaptam -- =========================================================================== Michael Witzel Elect. Journ. of Vedic Studies Harvard University www1.shore.net/~india/ejvs --------------------------------------------------------------------------- my direct line (also for messages) : 617- 496 2990 home page: www.fas.harvard.edu/~witzel/mwpage.htm