Bharatiya Jyotihshastra (History of Indian Astronomy), translated by R. V. Vaidya v2.c12.s2.t13.2

v2.c12.s2.t13.2

It has already been pointed out above that there are two versions of Vasiṣṭha Siddhānta which are similar in principles but different only in form. Of these, the one, printed at Vārānasī, has five chapters, containing 94 verses in ‘anuṣṭup’ metre. It has been mentioned in the beginning and at the end that this Siddhānta was revealed by the sage Vasiṣṭha to the sage Māṇḍavya. This Siddhānta is very brief. Other Siddhāntas mention the numbers of revolutions and other elements in addition to the measures of orbital lengths also. This (siddhānta) gives only the orbital lengths and the numbers of the revolutions of planets in a Yuga have got to be calculated from them. These can be found and they agree with the Sūrya Siddhānta. This is also incomplete with respect to some other subjects. This does not mention* the number of ‘sāvana’ days in a yuga. It is not mentioned from what epoch the ahargaṇa is to be reckoned. While the use of utkramajyā (versine) has been mentioned, no lists of versines are given*. The aphelia and nodes have not at all been mentioned. The following lines are given about them :—