| Proper Names | Cassiopeia Dwarf Galaxy, Cassiopeia Dwarf Spheroidal Galaxy (abbreviated to Cas dSph) | | Messier Number | None | | NGC/IC Number | None | | Other Designations | Andromeda VII, PGC 5065047 | | Constellation | Andromeda | | Right Ascension | 23h 26m 32s | | Declination | +50° 40' 33" | | Distance | c. 2,580,000 light years
c. 790,000 parsecs | | Magnitude | Apparent: +13.64
Absolute: -10.93 | | Mean Diameter | Apparent: 2.5'
Actual: c.2,000 light years | | Hubble Type | dSph dwarf spheroidal | | Optimum Visibility | September / October (usually visible from northern latitudes) | | Notes | The Cassiopeia Dwarf Galaxy is one of a collection of small galaxies associated with the huge Andromeda Galaxy, M31 (hence its alternative designation of Andromeda VII). Despite being named for Cassiopeia, this galaxy actually lies just within Andromeda, some distance to the north and west of the Andromeda Galaxy itself, on the border where the constellation of Andromeda meets Cassiopeia to the north. |
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