सिद्धान्तशिरोमणि: गणिताध्याय (भास्कराचार्य - ग्रहगणित, मध्यमाधिकार व स्पष्टाधिकार सटीक)

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(b) In the case of the superior planets, Bhāskara
mentions in the Golādhyāya “पातोऽथवा शीघ्रफलं विलोमं
कृत्वा स्फुटात् तेन युतात् शरोऽनः ” verse 22 (Golabandhādhikāra).
This also clearly indicates that the orbits of the superior
planets are also heliocentric, for, otherwise, there is no
purpose of subtracting the Sīghraphala from the True
position of the planet. The purpose in doing so is to
obtain the heliocentric longitude of the planet (vide
fig. 106).
True geocentric longitude of J is A/EJ = ASJ/.
Subtracting the S'ighraphala EJS = JEJ' from ASJ',
we have AŜJ the heliocentric longitude. Adding the
retrograde longitude of N (तेन युतात् as cited above in
verse 22) means adding ASN to AŜJ which gives NŜJ.
This is the argument to calculate the latitude of J.
(c) Bhāskara alludes to a confusion in the mind of
Chaturvedāchārya in this context while commenting upon
verses 23, 24 in Golabandhādhikāra (Golādhyāya). Chatur-
vedāchārya commenting on Brahmagupta's words (verse 10
Grahayukti-adhikāra ch. 9, Brahma Sphutasiddhānta)
exclaims. "The latitude of Mercury and Venus will be the
same as what they are at the point of S'īghroccha ; correct-
ness of the result alone is proof ; no other reason could be
adduced !" Bhāskara clears his misconception in the
following words. "The number of sidereal revolutions of
the nodes of Mercury and Venus mentioned in the chapter
on mean motion, are to be increased by the number of the
sidereal revolutions of the S'īghrocchas of Mercury and
Venus, as mentioned by Mādhava in his work “ Siddhānta-
chudāmani ”. This means that the S'īghra anomaly is to
be added to the position of the node obtained by the smaller
number of revolutions given in the chapter on mean
motion.