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

350 PAÑCASIDDHĀNTIKĀ XVIII.56
Specifications of the gati-s of Mercury
54. From setting to rising the degrees and days are given by the fourth gati.
From rising to vakra (beginning) is (given by) the first gati. The third gati is
(from) anuvakra (i.e., end of retrogression) to setting.
It will be seen that this verse explains what the four gati-s indicate a fact which has not been men-
tioned earlier. Actually, there is no direct reference to the second gati. But it can be inferred that
this gives the retrogression period and the degrees.
TS have made some emendations but have not translated them but say that they are not able to
comprehend the meaning of these verses. NP have adopted the emendations of TS and have just
translated them as they are and that does not make any sense. They comment: "We cannot connect
any rational procedure with the verses XVII, 54-56".
गतिविश्लेषकृतिघ्नैरंशैर्गतिवर्गभाजितैर्लब्धम् |
हित्वा राशिभ्यो भुक्तं प्रथमगतौ वक्रपश्चाच्च || ५५ ||
वक्रगतौ पूर्वार्धे तृतीयगत्यां च यत्कृति गुणितैः |
भागैर्गतिकृतिभक्तैः फलमनुपाताच्चतुर्थगतौ || ५६ ||
55. By the square of the difference in gati-s (days) multiply the degrees and
divide by the square of the gati-s. The result is to be subtracted from the
degrees and that gives the degrees gone in the first gati and in the second half
of vakra-gati.
56. In the first half of vakra-gati and in the third gati multiply the square (of
the days passed) by the degrees and divide by the square of the gati-s (days).
For the fourth gati the result is obtained by (direct) proportion [since the
motion in this section is practically uniform.]
54a. A. अष्टो; C. अर्कौ; D. अथो. A.B.C. न्तरांशान् 55a. B. ॰रंसैगत॰
b. A.B.C.D. दिवसाथतुर्थगत्या occurs as c. They c. B. भुक्तं
have as b, बुधस्य कालांश (A.B. कालांश) d. A. गातौ. A. वक्रपश्वाद्वा; B. वक्रपश्चाच्च;.
कांस्त्रिगत्यूनान् (A.B. गत्यूनात्, D. गतीनाम्) D. वक्रपश्चात्
d. A.B.C.D. अनुवक्रमजमीनयोर्मन्दम् (A. योन्दम्,
B. योर्मदम्). 56a. A. वर्गाक्रगतौ; B. चक्रगतौ
b. A.C. गत्या च; D. गत्याश्च
A. यात्कृतं; B. तक्षत. C. गुणितम्; D. [यात्कृति गुणितैः]
c. A.B. गतिकृति (B. क्रति). B1. भत्यै; B2.3. भृत्यै
d. D. ॰मनुपाञ्च च. A.B. ॰र्थभागगतौ (B2.3. गतौ)