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

298 PAÑCASIDDHĀNTIKĀ XVI.11
Deduction for 3 nāḍīs, 9 vināḍīs − 1′ 39.5″
Less 1917‴ ÷ 5 − 6″
The epoch constant = 2ʳ 15° 34′ 58″
There is agreement.
Mercury: Yuga revolutions
1,57,79,17,800 × 100 ÷ 8997 = 1,79,36,998 rev. 11ʳ 21° 41′ 33″
Rev. Correction = 1,79,36,99 × 4½‴ = + 1ʳ 13° 41′ 15″
The Yuga cycles = 1,79,37,000 Rev. 0ʳ 5° 22′ 48″
There is fair agreement with the Ārdharātrika-pakṣa etc. with an excess of 5° 22′ 48″ in the yuga,
which need not be considered great in a karaṇa rule. 4 7/16 instead of 4½‴ would have taken this
difference also into account.
Epoch constant for Mercury
1,79,37,000 ( 1/1200 + 1/(600 × 1200) ) = 14,972 rev., 4ʳ 28° 30′ 0″
Subtracting for the excess 3 nāḍīs, 9 vināḍīs − 23′ 53″
For 1/16 repeat the correction + 16″
Epoch constant = 4ʳ 28° 17′ 23″
Here the constant seems to have been given to nearest minute.
Venus: Yuga revolutions
1,57,79,17,800 × 10 ÷ 2247 70,22,331 rev. 1ʳ 8° 55′ 54″
Revolution correction = 70,22,331 × 10½ = 56 Rev. 10ʳ 21° 47′ 52″
Yuga cycles = 70,22,388 0ʳ 0° 43′ 46″
There is a small error of 43′ 46″, negligible in the long period of yuga, owing to the karaṇa rule.
10 85/178 would have been very correct.
Epoch constant for Venus
Epoch constant, 70,22,388 ( 1/1200 + 1/(600 × 1200) ) = 5861 rev. 8ʳ 27° 35′ 38″.4
Less for 3 nāḍīs, 9 vināḍīs − 5′ 2″
Extra in the correction + 2′ 4″
Epoch correction (in full agreement) = 8ʳ 27° 30′ 39″
In the Sun, Moon, Rāhu, and Moon’s apogee too we see much exact agreement with Ārdharāt-
rika-pakṣa, Khaṇḍakhādyaka and Bhaṭṭotpala-quoted Paulīśa, from which we can conclude that the
source of VM’s Saura is the Old Saura-siddhānta.