पञ्चसिद्धान्तिका (आचार्य वराहमिहिर - सूर्य, रोमक, पौलिश, वासिष्ठ एवं पितामह सिद्धान्त)

296 PAÑCASIDDHĀNTIKĀ XVI. 11 Note 1. I follow TS's emendations, except in verse 6, where I have read khamakṣau as khapakṣau instead of their khamakṣo, makṣo being meaningless. But their meaning, 20, is all right. In 7, the word kṣepa can stand, and need not be emended as done by them. Note 2. The word madhya with reference to Mars, Jupiter and Saturn is mean planet in modern parlance, and śīghra with reference to Mercury and Venus, is mean planet according to modern terminology. Note 3. How to get the days from epoch has already been explained, and it should only to be brought to the mid-night following to be used here. Example 1. Find the mean Mars at 1,20,553 days from the midnight following the Romaka epoch, which is the epoch given for star-planets. 1,20,553 ÷ 687 = 175 revolutions and = 5ʳ 21° 52' 40" The revolution correction = 175 × 14" = + 41" Kṣepa or mean at epoch = 2ʳ 15° 35' 0"

Mean Mars at required date = 8ʳ 7° 28' 21" Example 2. Find the Śīghra Venus at 1,20,553 days for epoch. 1,20,553 × 10 ÷ 2247 = 536 revolutions and 6ʳ 2° 19' 23" Revolution Correction: 536 × 10½" = + 1° 33' 48" Śīghra at epoch = 8ʳ 27° 30' 39"

Śīghra of Venus at 1,20,553 days = 3ʳ 1° 23' 50" Note 4. The rules give to find the mean planets etc. depend on the fact that there are approxi- mately 100 revolutions of Jupiter in 4,33,232 days, one revolution of Mars in 687 days, 1000 revolutions of Saturn in 1,07,66,066 days, 100 śīghra (truly mean) revolutions of Mercury in 8,797 days and 10 of Venus in 2247 days. The revolution corrections make these exact. The epoch constants are the means at epoch. Note 5. From the rules given we can reconstruct the yuga cycles of the original Saura-siddhānta of which the Saura of the PS is a Karaṇa, and from these the epoch constants. These we shall do now. The yuga days of the original Saura are 1,57,79,17,800, as computed from the short Saura yuga given in I.14, from which it can be computed that in 1,80,000 years there are 6,57,46,575 days, since the yuga is 43,20,000 years, being 24 times the short yuga. We might now verify by calculation, the yuga revolutions (yuga-paryaya) and epoch constants (kṣepa) of the several planets. Jupiter: Yuga revolutions 1,57,79,17,800 × 100 ÷ 4,33,232 = 3,64,220, rev. 0ʳ 17° 25' 1" Revolution correction = 3,64,220 × 10''' = – 16° 51' 43"

∴ The number of rev. etc. in the yuga = 3,64,220 rev., 0ʳ 0° 31' 18"