Pegasus Dwarf Spheroidal Galaxy

"Andromeda 6" redirects here. For the star, see 6 Andromedae.

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).

Pegasus Dwarf Spheroidal Galaxy
Pegasus Dwarf Spheroidal Galaxy with the legacy surveys
Observation data (J2000 epoch)
Constellation	Pegasus
Right ascension	23h 51m 46.3s[1]
Declination	+24° 34′ 57″[1]
Heliocentric radial velocity	−341.6 ± 1.7 km/s[2]
Distance	2.713 ± 0.075 Mly (831.8 ± 23 kpc)[2]
Apparent magnitude (V)	24.6[2]
Absolute magnitude (V)	−11.6[2]
Characteristics
Type	dSph[3]
Apparent size (V)	4.0′ × 2.0′[1]
Other designations
Pegasus II,[1] Andromeda VI,[1] Peg dSph,[1] KKH 99,[1] PGC 2807158

General information

Hubble Space Telescope image of a part of the Pegasus Dwarf Spheroidal Galaxy

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 about 830 kpc from Earth and a distance of 281.6 kpc from the Andromeda Galaxy.^[2]

The galaxy was discovered in 1999^[6] by various authors on the Second Palomar Observatory Sky Survey (POSS II) films.^[7]

See also

• List of Andromeda's satellite galaxies
• Pegasus Dwarf Irregular Galaxy (Peg DIG)
• Pegasus galaxy, the Stargate Atlantis fictional location (probably the Pegasus Dwarf Irregular Galaxy).