Locus, in Philosophy, a mode of space, or that part of immoveable space which any body possesses. See Metaphysics, No. 185.

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's 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 $23^\circ 30'$ to the sine of any present declination given or observed, for instance, $23^\circ 15'$; so is the radius $10$ to the sine of its longitude $81^\circ 52'$; which, if the declination were north, would give $20^\circ 52'$ of Gemini; if south, $20^\circ 52'$ 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.