210 Also putting λ=1a, From (4) and (5), Therefore, ASTRONOMICAL CONSTANTS AT +B.(-x)=b.ln(n-1), or An +³B-1³b. . B = -tb, Sub 16 and A = sin λ = 16x (T-λ) 5² 42(T-2)² where λ =
- 0/180.
The length of the so called circle of the sky and the rule for deriving the length of the orbit of a planet: 20. Multiply the revolution-number of the Moon by 216000 then is obtained the length of the circle of the sky (in terms of yojanas). When the circle of the sky is divided by the revolution-number of any given planet, the quotient denotes the length of the circular orbit of that planet. Thus we get (1) length of the circle of the sky = 1,24,74,72,05,76,000 yojanas, (2) length of the Sun's orbit = 28,87,666 yojanas, (3) length of the Moon's orbit (4) length of Mars' orbit -4 = = 2,16,000 yojanas, 132027 54,31,291287103 373277 6,95,473896851 3,42,50,133, (5) length of Mercury's orbit (6) length of Jupiter's orbit (7) length of Venus's orbit (8) length of Saturn's orbit Midnight day-reckoning of Aryabhaṭa I: 21. The astronomical processes which have been set forth above come under the sunrise day-reckoning. In the midnight 699 1897 255221 585199 17,76,421; yojanas, yojanas, yojanas, = 8,51,14,493; (5) yojanas, 5987 36641 yojanas.
