NGC 3811
Galaxy in the constellation Ursa Major
From Wikipedia, the free encyclopedia
NGC 3811 is a barred spiral galaxy in the constellation of Ursa Major. Its velocity with respect to the cosmic microwave background is 3,299±15 km/s, which corresponds to a Hubble distance of 158.7 ± 11.1 Mly (48.65 ± 3.41 Mpc).[1] Additionally, 12 non-redshift measurements give a similar mean distance of 152.10 ± 12.53 Mly (46.633 ± 3.843 Mpc).[2] It was discovered by German-British astronomer William Herschel on 9 February 1788.[3]
Right ascension11h 41m 16.6161s[1]
Declination+47° 41′ 26.887″[1]
| NGC 3811 | |
|---|---|
NGC 3811 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 11h 41m 16.6161s[1] |
| Declination | +47° 41′ 26.887″[1] |
| Redshift | 0.010294±0.000009[1] |
| Heliocentric radial velocity | 3,086±3 km/s[1] |
| Distance | 152.10 ± 12.53 Mly (46.633 ± 3.843 Mpc)[1] |
| Apparent magnitude (V) | 12.9[1] |
| Characteristics | |
| Type | SB(r)cd[1] |
| Size | ~110,600 ly (33.91 kpc) (estimated)[1] |
| Apparent size (V) | 2.2′ × 1.7′[1] |
| Other designations | |
| IRAS 11386+4758, UGC 6650, MCG +08-21-091, Mrk 185, PGC 36265, CGCG 242-074[1] | |
NGC 3811 is a starburst galaxy.[1] It is also a galaxy whose nucleus shines in the ultraviolet range, and is thus listed in the Markarian catalogue as Mrk 185.[4]
Supernovae
Two supernovae have been observed in NGC 3811:
- SN 1969C (type unknown, mag. 12) was discovered by Italian astronomer Leonida Rosino on 9 February 1969, and independently by Jankovits on 11 February 1969.[5][6]
- SN 1971K (type unknown, mag. 16.1) was discovered by Russian amateur astronomer Piotr Grigor'evich Kulikovsky on 12 June 1971.[7][8]
