Andromeda X

Andromeda X (And 10) is a dwarf spheroidal galaxy about 2.9 million light-years away from the Sun in the constellation Andromeda.[1] Discovered in 2005 by Zucker et al., And X is a satellite galaxy of the Andromeda Galaxy (M31). Aided by the application of stellar photometry to data from the Sloan Digital Sky Survey similar to the Andromeda IX discovery, the new finding indicates that this type of extremely faint satellite might be common in the Lower Group, potentially providing further support for hierarchical cold dark matter models.[2]

Not to be confused with Chi Andromedae or 10 Andromedae.
Andromeda X
Observation data (J2000 epoch)
ConstellationAndromeda
Right ascension01h 06m 33.9s
Declination+44° 48′ 16″
Apparent magnitude (V)16.1
Absolute magnitude (V)-8.1
Characteristics
TypedSph
Apparent size (V)7 arcmin
Notable featuressatellite galaxy of the Andromeda Galaxy
Other designations
And X, PGC 5056921

See also

References
  1. "Andromeda X". spider.seds.org. Retrieved 2022-04-06.
  2. Zucker, Daniel B.; Kniazev, Alexei Y.; Martinez-Delgado, David; Bell, Eric F.; Rix, Hans-Walter; Grebel, Eva K.; Holtzman, Jon A.; Walterbos, Rene A. M.; Rockosi, Constance M.; York, Donald G.; Barentine, J. C. (2006-01-26). "Andromeda X, A New Dwarf Spheroidal Satellite of M31: Photometry". doi:10.1086/516748. {{cite journal}}: Cite journal requires |journal= (help)


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