locus, in philosophy, a mode of space, or that part of immoveable space which any body possesses. See METAPHYSICS, no 50.

PLACE in astronomy. The place of the sun, a star, &c. denotes the sign and degree of the zodiac which the luminary is in; or the degree of the ecliptic, reckoning from the beginning of aries, which the planet or star's circle of longitude cuts; and therefore coincides with the longitude of the sun, planet, or star. As the sine of the sun's greatest declination 23° 30' to the fine of any pretent declination given or observed, for instance, 23° 15': so is the radius 10: to the fine of his longitude 81° 52'; which, if the declination were north, would give 20° 52' of gemini; if south, 20° 52' of capricorn, for the sun's place. See DECLINATION, &c.

The place of the moon being that part of her orbit wherein she is found at any time, is of various kinds, by reason of the great inequalities of the lunar motions, which render a number of equations and reductions necessary before the just point be found. The moon's fictitious place is her place once equated; her place nearly true, is her place twice equated; and her true place thrice equated. See ASTRONOMY, passim.