14h09m33.9s, +60° 24′ 34.3″| NGC 5502 | |
|---|---|
SDSS image of NGC 5502
| |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 14h09m 33.9s[1] |
| Declination | +60° 24′ 34.3″[1] |
| Redshift | 0.02940[1] |
| Heliocentric radial velocity | 8684 km/s[1] |
| Galactocentric velocity | 8949 km/s[2] |
| Distance | 400 ± 28 Mly (122.6 ± 8.6 Mpc)[2] |
| Apparent magnitude (V) | 15.9[2] |
| Absolute magnitude (V) | -19.5[nb 1] |
| Characteristics | |
| Type | Sa D[2] |
| Apparent size (V) | 0.63' x 0.29'[2] |
| Other designations | |
| MCG +10-20-077, PGC 50508[1][3] | |
NGC 5502 (also known as NGC 5503) is a spiral galaxy in the constellation of Ursa Major,[3][4] registered in New General Catalogue (NGC).[1]
NGC 5502 was discovered by Edward Swift (father) on 9 May 1885 and later double listed by Lewis Swift (son) two days later on 11 May 1885 as NGC 5503.[3] They gave descriptions "between two stars, one a wide double" and "forms with two stars a right triangle" respectively.[4] In the New General Catalogue, John Louis Emil Dreyer described the galaxy as "most extremely faint, very small, round, very difficult, 2 stars near".[3] The apparent difference in positions (2 arcmin) could have caused the confusions between NGC 5502 and NGC 5503.[3]
