|This article relies largely or entirely upon a single source. (December 2015)|
|Observation data (J2000 epoch)|
|Right ascension||00h 42m 06.0s|
|Declination||+40° 37′ 00"|
|Distance (comoving)||830,000 kpc|
|Distance||2.7 million ly|
|Apparent dimensions (V)||45x10 arcmin|
|Apparent magnitude (V)||9.1|
|Absolute magnitude (V)||-15.6|
|Notable features||satellite galaxy of the Andromeda Galaxy|
|And VIII, PGC 5056928|
Andromeda VIII (And VIII / 8) is a galaxy discovered in August 2003. It is a companion galaxy to the Andromeda Galaxy, M31, and evaded detection for so long due to its diffuse nature. The galaxy was finally discovered by measuring the redshifts of stars in front of Andromeda, which proved to have different velocities than M31 and hence were part of a different galaxy.
As of at least 2006, the actuality of And VIII as a galaxy has not yet been firmly established (Merrett et al. 2006).
- Merrett, H. R.; Merrifield, M. R.; Douglas, N. G.; Kuijken, K.; Romanowsky, A. J.; Napolitano, N. R.; Arnaboldi, M.; Capaccioli, M.; et al. (June 2006), "A deep kinematic survey of planetary nebulae in the Andromeda galaxy using the Planetary Nebula Spectrograph", Monthly Notices of the Royal Astronomical Society 369 (1): 120–142, arXiv:astro-ph/0603125, Bibcode:2006MNRAS.369..120M, doi:10.1111/j.1365-2966.2006.10268.x