NGC 721 | |
---|---|
Observation data ( J2000 epoch) | |
Constellation | Andromeda |
Right ascension | 01h 54m 45.45687s [1] |
Declination | +39° 23′ 00.7702″ [1] |
Redshift | 0.018566 [2] |
Heliocentric radial velocity | 5514 km/s [2] |
Distance | 182.6 Mly (55.98 Mpc) [3] |
Apparent magnitude (B) | 13.8 [2] |
Characteristics | |
Type | SB(rs)bc [4] |
Other designations | |
UGC 1376, MCG 06-05-043, PGC 7097 [2] |
NGC 721 is a barred spiral galaxy located in the constellation Andromeda about 250 million light years from the Milky Way. It was discovered by the Prussian astronomer Heinrich d'Arrest in 1862. [5] [6] [7]