﻿2$2 ON THE ASTRONOMICAL COMPUTATIONS 



1503. 56 — 372. 7 = 113 1. 49 Yojan, which divided 

 by fifteen, quotes 75' 27" of a great circle for the 

 same. 



From the half sum of the diameters of the moon 

 and shadow 7 ^ * 7 * *° * = 52' 46", subtract he moon's 

 latitude 48' 45", the remainder is the Chch anna, or 

 portion of the moon's diameter eclipsed, 4' 1" of a 

 great circle, 2?d by the nature of a right angled 

 triangle, the sq -.art root of the difference of the so res 

 of the moon's latitude, and the half sum of the 

 diameters of the shadow and moon, wl'l be the path 

 of the moon's centre, from the beginning to the 

 middle of the eclipse. 



The diameter of the shadow is, j§ 27 

 Of the moon, - - - - 30 5 



Sum, - 105 32 



Half sum, 52 46 



The moon's latitude is, - 48 45 



V 52. 46 2 x 48. 45 2 = 20' 1 1" which, divided 

 by the moon's motion from the sun, quotes the half 

 duration of the<eclipse in dandas a.r,d_pa/as, or Hindu 



mean solar hours, 2& gg^^" = 1 46 25 ; which 



IV ' P V 



doubled, is 3 %^ 50, the whole duration of the 

 eclipse; which will be partial, the moon's latitude 

 being greater than the differ nee between the semi- 

 diaineters of the moon's disk and the earth's shadow. 



SEVENTH OPERATION. 



To find the position of the equinoctial colures, 

 and thence the? declination of the sun, the length 



