uranology
31astrodynamics — noun the branch of astronomy that studies the motion of natural and artificial bodies in space • Hypernyms: ↑astronomy, ↑uranology * * * /as troh duy nam iks/, n. (used with a sing. v.) the science dealing with the paths of space vehicles. [1950… …
32astrometry — noun the branch of astronomy that deals with the measurement of the position and motion of celestial bodies • Hypernyms: ↑astronomy, ↑uranology * * * astrometry (əˈstrɒmɪtrɪ) [f. astro + Gr. µετρία measurement.] The measurement of the apparent… …
33autumnal equinox — noun 1. September 22 • Syn: ↑September equinox, ↑fall equinox • Ant: ↑vernal equinox • Hypernyms: ↑equinox • Part Holonyms: ↑fall …
34barycenter — noun (astronomy) the common center of mass around which two or more bodies revolve • Topics: ↑astronomy, ↑uranology • Hypernyms: ↑center of mass, ↑centre of mass …
35celestial latitude — noun (astronomy) the angular distance of a celestial body north or to the south of the celestial equator; expressed in degrees; used with right ascension to specify positions on the celestial sphere • Syn: ↑declination, ↑dec • Topics: ↑astronomy …
36celestial longitude — noun (astronomy) the equatorial coordinate specifying the angle, measured eastward along the celestial equator, from the vernal equinox to the intersection of the hour circle that passes through an object in the sky; usually expressed in hours… …
37celestial mechanics — noun the branch of astronomy concerned with the application of Newton s laws of motion to the motions of heavenly bodies • Hypernyms: ↑astronomy, ↑uranology …
38come up — verb 1. bring forth, usually something desirable (Freq. 9) The committee came up with some interesting recommendations • Hypernyms: ↑generate, ↑bring forth • Verb Frames: Somebody s something 2. result or issue …
39culmination — noun 1. a final climactic stage (Freq. 3) their achievements stand as a culmination of centuries of development • Syn: ↑apogee • Derivationally related forms: ↑culminate • Hypernyms: ↑phase, ↑ …
40date of reference — noun (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded • Syn: ↑epoch • Topics: ↑astronomy, ↑uranology • Hypernyms: ↑date …
