Zero Points of Vedic Astronomy: Discovery of the Original Boundaries of Nakshatras by Roy Raja Ram Mohan

Author:Roy, Raja Ram Mohan [Roy, Raja Ram Mohan]
Language: eng
Format: epub
Publisher: Mount Meru Publishing
Published: 2020-01-24T16:00:00+00:00

8.1: Rohiṇī system

Based on my analysis of the coordinates of yogatārās given in Sūrya Siddhānta, I have shown in my recently published peer-reviewed paper that the yogatārā of Rohiṇī was at zero longitude of the original nakṣatra system [1]. I have named this system with origin at the yogatārā of Rohiṇī as the Rohiṇī system. The yogatārā of Rohiṇī according to Table 7.6 is Aldebaran (alpha Tau). The Rohiṇī system with yogatārā of Rohiṇī, Aldebaran, at zero longitude is shown in Figures 8.1a to 8.1d. In this system, the yogatārā of Rohiṇī, Aldebaran, is at the boundary of Rohiṇī and Kṛttikā. The ecliptic longitudes of yogatārās, as identified by Burgess (1860), in Rohiṇī system are shown in Table 8.1 along with the longitudes (dhruvaka) of yogatārās given in Sūrya Siddhānta 8.1-9. The numbers in Figures 8.1a-d refer to the serial number of nakṣatras shown in Table 8.1. The ecliptic longitudes in Rohiṇī system were obtained by setting a date on which the ecliptic longitude of the yogatārā of Rohiṇī, Aldebaran, became 0° 0′. This date was found to be June 12, ‑3044 by trial and error using Stellarium software. From Table 8.1, it is seen that the longitude of the yogatārā of Rohiṇī had shifted by approximately 50° from its zero point in Rohiṇī system during the time of writing of Sūrya Siddhānta. If the ecliptic longitudes were updated by shifting the zero point of longitude to the beginning of Revatī nakṣatra, which is fourth nakṣatra from Rohiṇī, then 53° 20′ should have been added to the ecliptic longitude in Rohiṇī system instead of 50°. This raises the possibility that another system was also in use, and there was confusion between these two systems resulting in a mix of data derived from two different systems.

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