NGC 5056
Galaxy in the constellation Coma Berenices
From Wikipedia, the free encyclopedia
NGC 5056 is a spiral galaxy in the constellation of Coma Berenices. Its velocity with respect to the cosmic microwave background is 5,839±17 km/s, which corresponds to a Hubble distance of 280.9 ± 19.7 Mly (86.13 ± 6.03 Mpc).[1] However, 39 non-redshift measurements give a closer mean distance of 208.31 ± 10.46 Mly (63.867 ± 3.207 Mpc).[2] It was discovered by German-British astronomer William Herschel on 13 March 1785.[3][4]
Right ascension13h 16m 12.3527s[1]
Declination+30° 57′ 01.239″[1]
| NGC 5056 | |
|---|---|
NGC 5056 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 13h 16m 12.3527s[1] |
| Declination | +30° 57′ 01.239″[1] |
| Redshift | 0.018653±0.000005[1] |
| Heliocentric radial velocity | 5,592±1 km/s[1] |
| Distance | 208.31 ± 10.46 Mly (63.867 ± 3.207 Mpc)[1] |
| Group or cluster | [M98j] 192 |
| Apparent magnitude (V) | 13.7[1] |
| Characteristics | |
| Type | Scd[1] |
| Size | ~135,800 ly (41.65 kpc) (estimated)[1] |
| Apparent size (V) | 1.7′ × 1.0′[1] |
| Other designations | |
| IRAS 13138+3112, UGC 8337, MCG +05-31-166, PGC 46180, CGCG 160-173[1] | |
NGC 5056 is listed as having an active galactic nucleus.[5]
According to Abraham Mahtessian, NGC 5056 and NGC 5065 form a pair of galaxies, known as [M98j] 192.[6]
