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NGC 317 is a pair of interacting galaxies, consisting of a lenticular galaxy NGC 317A (also designated as PGC 3442) and a spiral galaxy NGC 317B (also designated as PGC 3445), in the constellation Andromeda. It was discovered on October 1, 1885 by Lewis Swift. [2]
Andromeda is one of the 48 constellations listed by the 2nd-century Greco-Roman astronomer Ptolemy, and one of the 88 modern constellations.Located in the northern celestial hemisphere, it is named for Andromeda, daughter of Cassiopeia, in the Greek myth, who was chained to a rock to be eaten by the sea monster Cetus.
Zeta Andromedae (Zeta And, ζ Andromedae, ζ And) is a star system in the constellation Andromeda. It is approximately 189 light-years from Earth. Zeta Andromedae is the star's Bayer designation. It also has the Flamsteed designation 34 Andromedae and multiple other designations in stellar catalogues.
Xi Andromedae (ξ Andromedae, abbreviated Xi And, ξ And), officially named Adhil / ə ˈ d ɪ l /, [7] [8] is a solitary [3] star in the northern constellation of Andromeda. It has an apparent magnitude of +4.9. [2] Based on parallax measurements obtained during the Gaia mission, it lies at a distance of roughly 223 light-years (68 parsecs ...
Lambda Andromedae, Latinized from λ Andromedae, is the Bayer designation for a binary star system in the northern constellation of Andromeda. At an estimated distance of approximately 84.6 light-years (25.9 parsecs) from Earth, [1] it has an apparent visual magnitude of +3.8. [5] This is bright enough to be seen with the naked eye.
Delta Andromedae, Latinized from δ Andromedae, is a triple star [12] system in the northern constellation of Andromeda.The system is visible to the naked eye as a point of light with a combined apparent visual magnitude of 3.28. [2]
NGC 7686 is a moderately-sized open cluster in the constellation Andromeda, containing about 80 stars. [2] At magnitude 5.6, it is an easy target for binoculars and small telescopes. [3] According to Johnson et al. (1961), the "color-magnitude diagram shows merely a uniform scatter with no significant tendency to show a cluster main sequence ...
NGC 51 is a lenticular galaxy in the constellation Andromeda. It has a diameter of 90,000 light-years. [3] The galaxy was discovered on September 7, 1885, by Lewis Swift, who described it as "Pretty faint, pretty small, round, brighter middle." [3] One supernova, SN 2016gxp (type Ia, mag. 18.6), was discovered in NGC 51 on October 5, 2016. [5]