Pegasus Dwarf Spheroidal Galaxy | |
---|---|
![]() Hubble Space Telescope image of Pegasus Dwarf Spheroidal Galaxy | |
Observation data (J2000 epoch) | |
Constellation | Pegasus |
Right ascension | 23h 51m 46.3s [1] |
Declination | +24° 34′ 57″ [1] |
Redshift | −354 ± 3 km/s [1] |
Distance | 2.7 ± 0.1 Mly (820 ± 20 kpc) [2] [3] |
Apparent magnitude (V) | 14.2 [1] |
Characteristics | |
Type | dSph [2] |
Apparent size (V) | 4.0′ × 2.0′ [1] |
Notable features | - |
Other designations | |
Pegasus II, [1] Andromeda VI, [1] Peg dSph, [1] KKH 99, [1] PGC 2807158 |
The Pegasus Dwarf Spheroidal (also known as Andromeda VI or Peg dSph for short) is a dwarf spheroidal galaxy about 2.7 million light-years away in the constellation Pegasus. The Pegasus Dwarf is a member of the Local Group and a satellite galaxy of the Andromeda Galaxy (M31).
The Pegasus Dwarf Spheroidal is a galaxy with mainly metal-poor stellar populations. [4] Its metallicity is [Fe/H] ≃ −1.3. [5] It is located at the right ascension 23h51m46.30s and declination +24d34m57.0s in the equatorial coordinate system (epoch J2000.0), and in a distance of 820 ± 20 kpc from Earth and a distance of 294 ± 8 kpc [a] from the Andromeda Galaxy.
The galaxy was discovered in 1999 [6] by various authors on the Second Palomar Observatory Sky Survey (POSS II) films. [7]