Sculptor Dwarf Irregular Galaxy
Irregular galaxy in the constellation Sculptor
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The Sculptor Dwarf Irregular Galaxy (SDIG) is an irregular galaxy in the constellation Sculptor. It is a member of the NGC 7793 subgroup of the Sculptor Group.[1]
Right ascension00h 08m 13.36s[1]
Declination−34° 34′ 42.0″[1]
| Sculptor Dwarf Irregular | |
|---|---|
Sculptor Dwarf Irregular Galaxy close up by Hubble Space Telescope. | |
| Observation data (J2000 epoch) | |
| Constellation | Sculptor |
| Right ascension | 00h 08m 13.36s[1] |
| Declination | −34° 34′ 42.0″[1] |
| Redshift | 221 ± 6 km/s[2] |
| Distance | 10.44 ± 0.33 Mly (3.2 ± 0.1 Mpc)[1] |
| Apparent magnitude (V) | 15.5[2] |
| Absolute magnitude (V) | −11.87[1] |
| Characteristics | |
| Type | dIrr[1] |
| Apparent size (V) | 1.1′ × 0.9′[2] |
| Half-light radius (apparent) | 29″.4 ± 1″.6[1] |
| Other designations | |
| SDIG,[2] PGC 621,[2] ESO 349-031[2] | |
Nearby galaxies and galaxy group information
The Sculptor Dwarf Irregular Galaxy and the dwarf galaxy UGCA 442 are both companions of the spiral galaxy NGC 7793.[3] These galaxies all lie within the Sculptor Group, a weakly bound, filament-like group of galaxies located near the Local Group.[3]
See also
- Sculptor Dwarf Galaxy – a dwarf spheroidal or elliptical galaxy, also in Sculptor, but significantly closer; a satellite of the Milky Way.
