Page:English translation of the Surya Siddhanta and the Siddhanta Siromani by Sastri, 1861.djvu/20

. Multiply the number of elapsed terrestrial days by the number of a planet's revolutions (in a ); divide the product by the number of terrestrial days (in a ); and the quotient will be the elapsed revolutions, signs, degrees &c. of the planet. Thus the mean place of each of the planets can be found..

. In the same way, the mean places of the and  (apogee) whose direct revolutions (in a ) are mentioned before, and those of the nodes of the planets can be found. But the places of the nodes, thus found, must be subtracted from twelve signs, because their motions are contrary to the order of the signs.

. Multiply the number of elapsed revolutions of Jupiter by 12; to the product add the number of the signs from the stellar Aries to that occupied by Jupiter; divide the amount by 60, and reckoning the remainder from, you will find the present.

. These processes are mentioned (from 45th to 54th) indetail, but, for convenience' sake, let (an astronomer) computing the elapsed terrestrial days from the beginning of the, find easily the mean places of the planets.

. At the end of this the mean places of all the planets, except their nodes and apogees, coincide with each other in the first point of stellar Aries.

. (At the same instant) the place of the Moon's apogee=nine signs, her ascending node=six signs, and the places of the other slow moving apogees and nodes, whose revolutions are mentioned before, are not without degrees (i. e. they contain some signs and also degrees).