Celestial coordinate system — For other uses of Celestial , see Celestial (disambiguation). Orientation of Astronomical Coordinates Orientation of the galactic, ecliptic and equatorial coordinate systems, projected on the celestial sphere, showing the galactic equator (black) … Wikipedia
Armillary sphere — An armillary sphere (variations are known as spherical astrolabe, armilla, or armil) is a model of the celestial sphere. Description and use of the armillary sphere The exterior parts of this machine are a compages of brass rings, which represent … Wikipedia
ecliptic — ecliptically, adv. /i klip tik/, n. 1. Astron. a. the great circle formed by the intersection of the plane of the earth s orbit with the celestial sphere; the apparent annual path of the sun in the heavens. b. an analogous great circle on a… … Universalium
16 Cygni — Starbox begin name = 16 CygniStarbox image caption=16 Cygni A/B on DSS2, 0.3° view Starbox observe 2s epoch = J2000.0 constell = Cygnus component1 = 16 Cygni A ra1 = RA|19|41|48.9535 dec1 = DEC|+50|31|30.217 appmag v1 = 5.96 component2 = 16 Cygni … Wikipedia