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

168 PAÑCASIDDHĀNTIKĀ VI.13
= rā. 9-4-35.8 + m × 1'.2
= practically nine rāśis, for a long time after or before Epoch.
Nineteen years before Epoch, this would have been exactly nine rāśis. A small difference in Rāhu,
(if it is 1'.2 more) would make it nine rāśis even at the taken time. It must be noted that one or even
two rāśis either way will not matter in our context, of redness at one end and brownness at the other,
for the difference between redness and brownness itself is slight. Only after two or three thousand
synodic months will there be perceptible difference, and the rule cease to hold good.
From the proof of the rule it will be seen that our emendation of triyamadviguṇam into dhīdviyama-
guṇam is necessary. triyamadviguṇam had perhaps been wrongly written by some scribe who had the
'saros', (consisting of 223 lunations) in his mind. As antithetical to kriyādikanyāntago nīcaḥ, we have
emended the meaningless group of letters, epikleśoyam ucca into jūketthageyam uccaḥ. Neither TS nor
NP seem to have understood the significance of this verse. TS observes on it: "A stanza of doubtful
import, see the Sanskrit commentary" (Tr., p.45) and the Sanskrit commentary suspects it to be of
astrological import (com., p.34). NP gives an incorrect translation and says "The synodic months
in an 18 year eclipse cycle is 223, but the role of this number in the present context remains obscure
to me" (Pt. II, p.55)
[ग्रहणपरिलेखा:]
सप्तदशाष्टत्रिंशत् तद्द्वयलिप्ता (युतोने) सूत्रेण ।
शशि (राहु) स्थितिवृत्तान्येक (स्थानानि चाऽऽलिख्य ॥ ११ ॥
प्रोक्ता (शशाङ्क) लङ्का-पूर्वाऽप (रायाश्च) पार्श्वयोश्चाऽपि ।
आयामिन्यो रेखास्त्रयोदश समान्तराः कार्याः ॥ १२ ॥
चन्द्रच्छेदकमेतद् व्याख्यागम्यं समासतोऽभिहितम् ।
ग्रासविमर्दस्थितयः संस्थानेनाऽत्र दृश्यन्ते ॥ १३ ॥
Diagrammatic representation
11. Draw three concentric circles with radii 17, 38 + 17 (= 55), and 38 - 17
(= 21), minutes of arc. These circles relate to the Moon, the duration and the
obscuration, respectively. (Drawing the part of the Moon's orbit forming the
path of the Moon), mark the points (of first and last contacts) and also those
of inversion and emergence if any).
12. Draw the diameter (making an angle equal to the Valana given in verses
7-8), with the ecliptic which, (according to this Siddhānta), is east-west with
reference to the equator. (This diameter shows the east-west of the place). (As
shown in fig. 5c) draw thirteen equally spaced lines parallel to this east-west
diameter. (The directions of the points of contact etc. are given by this figure).