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a variable star in the constellation of Andromeda. It is classified as a semiregular variable pulsating giant star, and varies from an apparent visual magnitude of 14.5 at minimum brightness to a magnitude of 9.9 at maximum brightness, with a period of approximately 238.3 days.
The galaxy's name stems from the area of Earth's sky in which it appears, the constellation of Andromeda, which itself is named after the princess who was the wife of Perseus in Greek mythology. [8] The virial mass of the Andromeda Galaxy is of the same order of magnitude as that of the Milky Way, at 1 trillion solar masses (2.0 × 10 42 ...
The most famous deep-sky object in Andromeda is the spiral galaxy cataloged as Messier 31 (M31) or NGC 224 but known colloquially as the Andromeda Galaxy for the constellation. [53] M31 is one of the most distant objects visible to the naked eye, 2.2 million light-years from Earth (estimates range up to 2.5 million light-years). [ 54 ]
Origin of name Notes Alcyoneus: Lynx: Andromeda Galaxy: Andromeda: Andromeda, which is shortened from "Andromeda Galaxy", gets its name from the area of the sky in which it appears, the constellation of Andromeda. [citation needed] Andromeda is the closest big galaxy to the Milky Way and is
Host galaxy Star system Stars in system Spectral type Apparent magnitude (V) Comments and references Andromeda LGGS J004051.59+403303.0: 1: LBV: 16.989 [6] Andromeda AE Andromedae (HV 4476) 1 LBV 17.0–17.9 [6] Andromeda AF Andromedae (HV 4013) 1 LBV 17.325 [6] Andromeda Var 15 ([WB92a] 370) 1 LBV 18.450 [6] Andromeda Var A-1 1 LBV 17.143 [6 ...
The Andromeda Galaxy (M31) is 2.5 Mly distant and the Triangulum Galaxy is around 3.2 Mly distant Host galaxy Star system Median distance Stars in system
In 2016, the International Astronomical Union (IAU) organized a Working Group on Star Names (WGSN) [2] to catalog and standardize proper names for stars. The WGSN's first bulletin, dated July 2016, [3] included a table of 125 stars comprising the first two batches of names approved by the WGSN (on 30 June and 20 July 2016) together with names of stars adopted by the IAU Executive Committee ...
Common name Messier New General Catalogue; Andromeda Galaxy: M 31: NGC 224 M 32: NGC 221 Constellation map ... List of stars in Andromeda; 0–9. 2 Andromedae; 3 ...