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

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circumference of the universe
—————————————————————————————— = 4331497½ yojanas
Number of sidereal revolutions
(because (324000 × 57753300000) / 4320000000 = (3240 / 432) × 577533
= (15 / 2) × 577533 = 8662995 / 2 = 4331497½).
Also, the circumference of the stellar universe was
presumed to be sixty times that of the Sun’s orbit.
With the constants obtained for the Moon’s diameter
and distance and with assumption that all the planets have
the same daily motion, the constants pertaining to the Sun
and the other planets were obtained. We shall resume this
topic in another context.
Verse 6. The mean daily motion of the planets.
The circumference of the universe divided by the num-
ber of days in the Kalpa, gives the daily spatial motion of
a planet. The planets move thus a distance of 11858¾
yojanas in a day.
Comm. Already explained.
Verse 7, and half the verse 8. The Ahargaṇa multiplied
by 11859 decreased by the quotient obtained by dividing
the product of the Ahargaṇa and 9921 by 35419 gives the
distance covered by a planet in yojanas. These yojanas
divided by the circumference of the planet’s orbit gives the
fraction of a revolution and the integral number of revolu-
tions made.
Comm. Let the Ahargaṇa be A; every planet should
have described a space equal to A × D where D is the dis-
tance traversed per day and is just a little less than 11859,
or more correctly should have described a space equal to
A × (C / c) where C is the afore-said circumference of the