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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.
IC 239 is a spiral galaxy in the constellation Andromeda. The galaxy lies about 35 million light years away from Earth, which means, given its apparent dimensions, that IC 239 is approximately 50,000 light years across. [1] It was discovered by Isaac Roberts in 1893. [3]
NGC 828 is a spiral galaxy in the constellation of Andromeda. Its velocity with respect to the cosmic microwave background is 5200 ± 17 km/s, which corresponds to a Hubble distance of 250.2 ± 17.5 Mly (76.70 ± 5.37 Mpc). [1] Additionally, three non-redshift measurements give a distance of 223.52 ± 7.06 Mly (68.533 ± 2.165 Mpc). [2]
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]
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 ...
Nu Andromedae (Nu And, ν Andromedae, ν And) is a binary star in the constellation Andromeda. The system has an apparent visual magnitude of 4.5, [2] which is bright enough to be seen with the naked eye. It is approximately 620 light-years (190 parsecs) from Earth. [1] Situated just over a degree to the west of this star is the Andromeda ...
Mu Andromedae (Mu And, μ Andromedae, μ And) is the Bayer designation for a star in the northern constellation of Andromeda. It has an apparent visual magnitude of 3.87, [2] making it readily visible to the naked eye. Based upon parallax measurements, it is approximately 130 light-years (40 parsecs) from Earth. [1]
NGC 70 is a spiral galaxy located in the constellation Andromeda. [7] It was discovered on October 7, 1855, by R. J. Mitchell [7] and was observed on December 19, 1897, by Guillaume Bigourdan from France who described it as "extremely faint, very small, round, between 2 faint stars".