NGC 4051
| Galaxy NGC 4051 |
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|---|---|
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| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Big Bear |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 03 m 09.614 s |
| declination | + 44 ° 31 ′ 52.80 ″ |
| Appearance | |
| Morphological type | SAB (rs) bc / Sy1.5 |
| Brightness (visual) | 10.0 mag |
| Brightness (B-band) | 10.8 mag |
| Angular expansion | 5.2 ′ × 3.9 ′ |
| Position angle | 135 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Affiliation |
M109 group NGC 4051 group LGG 269 |
| Redshift | 0.002336 ± 0.000004 |
| Radial velocity | 700 ± 1 km / s |
|
Stroke distance v rad / H 0 |
(33 ± 2) x 10 6 ly (10.21 ± 0.72) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | February 6, 1788 |
| Catalog names | |
| NGC 4051 • UGC 7030 • PGC 38068 • CGCG 243-038 • MCG + 08-22-59 • IRAS 12005 + 4448 • 2MASX J12030968 + 4431525 • GC 2680 • H IV 56 • h 1061 • LDCE 0867 NED065 • NVSS J120309 + 443154 • WISEA J120309.60 + 443152.7 | |
NGC 4051 is a bar-spiral galaxy with an active nucleus of the Hubble-type SBbc in the constellation Great Bear in the northern sky . It is an estimated 33 million light years away from the Milky Way and about 50,000 light years in diameter. The galaxy contains a supermassive black hole with a mass of 1.73 million solar masses and is classified as a Seyfert 1.5 galaxy .
She is part of the M109 group and the brightest member of the NGC 4051 group ( LGG 269 ).
The supernovae SN 1983I (Type Ic), SN 2003ie (Type IIP) and SN 2010br (Type Ib / c) were observed here.
The object was discovered on February 6, 1788 by the astronomer William Herschel using an 18.7 inch telescope.
NGC 4051 group ( LGG 269 )
| Galaxy | Alternative name | Distance / million ly |
|---|---|---|
| NGC 3906 | PGC 36953 | 45 |
| NGC 3938 | PGC 37229 | 38 |
| NGC 4051 | PGC 38068 | 33 |
| NGC 4096 | PGC 38361 | 28 |
| NGC 4111 | PGC 38440 | 37 |
| NGC 4117 | PGC 38503 | 44 |
| NGC 4138 | PGC 38643 | 42 |
| NGC 4143 | PGC 38654 | 44 |
| NGC 4183 | PGC 38988 | 44 |
| NGC 4218 | PGC 39237 | 35 |
| NGC 4288 | PGC 39840 | 26th |
| NGC 4346 | PGC 40228 | 40 |
| NGC 4389 | PGC 40537 | 35 |
| IC 750 | PGC 37719 | 33 |
| PGC 36990 | UGC 6805 | 52 |
| PGC 37038 | UGC 6818 | 38 |
| PGC 38356 | UGC 7089 | 36 |
| PGC 38582 | UGC 7129 | 43 |
| PGC 37584 | UGC 6930 | 38 |
Web links
Commons : NGC 4051 - collection of images, videos, and audio files
- Aladin Lite
- Spektrum .de: amateur recordings [1]