Andromeda XI

Not to be confused with Xi Andromedae.

Andromeda XI (And 11) is a dwarf spheroidal galaxy about 2.6 million light-years away from the Sun^[2] in the constellation Andromeda.^[4] Discovered in 2006,^[2] And XI is a satellite galaxy of the Andromeda Galaxy (M31).

Andromeda XI
Observation data (J2000 epoch)
Constellation	Andromeda
Right ascension	00h 46.3m [1]
Declination	+33° 48′ 05″[1]
Redshift	-0.001399 ± 0.000015[1]
Heliocentric radial velocity	(-419 ± 4.4) km/s[1]
Distance	2.6 ± 325 Mly (830 kpc)[2]
Absolute magnitude (V)	−7.3[3]
Characteristics
Type	dSph D[1]
Apparent size (V)	0.5 arcmin[4]
Notable features	satellite galaxy of the Andromeda Galaxy
Other designations
And XI, PGC 5056923

See also

• Astronomy portal

• List of Andromeda's satellite galaxies

References

1. "NAME Andromeda XI". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-11-03.
2. "The Galaxies of the Local Group". Retrieved 2017-11-03.
3. Yang, S.-C; Sarajedini, A (2012). "HST/WFPC2 Imaging of the Dwarf Satellites And XI and And XIII : HB Morphology and RR Lyraes". Monthly Notices of the Royal Astronomical Society. 419 (2): 1362. arXiv:1109.2038. Bibcode:2012MNRAS.419.1362Y. doi:10.1111/j.1365-2966.2011.19792.x. S2CID 119190619.
4. "Andromeda XI". Retrieved 2017-11-03.