पृष्ठम्:महाभास्करीयम्.djvu/२१४

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129 the measure of half the day. The measure of half the night is obtained contrarily.¹ This can be easily seen to be true from the celestial sphere. Rules relating to the corrections for the Moon: 29-30. Multiply the (Moon's) mean daily motion by the Sun's equation of the centre and then divide (the product) by the number of minutes in a circle (i.e., by 21600): (the result is the bhujantara correction for the Moon). Add it to or sub- tract it from the Moon's (mean) longitude (corrected for the longitude of the local place) in the same way as in the case of the Sun.

. All remaining corrections for the Moon are prescribed as in the case of the Sun. CORRECTIONS FOR THE MOON (The bhujantara correction) for the remaining planets also is calculated from the Sun's equation of the centre. The general formula for the bhujantara correction is: bhujantara correction (Sun's equation of the centre) x (planet's mean daily motion) 21600 The formula for the bhujantara correction for the Moon, stated in the text, is a particular case of this. A We have seen above that in the case of the Sun four corrections are applied in the following order: (1) the longitude correction, (2) the bhujaphala correction (i. e., the equation of the centre), (3) the bhujantara correction (i. e., the correction due to the Sun's equation of the centre). (4) the correction due to the Sun's ascensional difference. In the case of the Moon, the same four corrections are applied in A This rule is found also in SuSi, ii. 62-63; BrSpSi, ii. 60; KK (Sengupta's edition), i. 23; SiDV, I, ii. 20-21; Sise, iii. 70; Sisi, 1, ii. 52..