Indian Science and Technology in the Eighteenth Century: Some Contemporary European Accounts c9.86

c9.86

These observations apply also to the tables of Narsapur⁷⁵, and to the moon's equations, as well as to the sun's, with a circumstance, however, which is not easily accounted for, viz. that the differences between the numbers calculated by M. Cassini's rule, and those in the tables, are not greater in the case of the moon than of the sun, though the equation of the latter be more than double that of the former. They apply also to the tables *manda* of the planets, where the equations are greater than the ratio of the sines of their arguments requires, the excess being greatest at 30°, and amounting to some minutes in the equations of Saturn, Jupiter and Mars, in which last it is greatest of all.