NGC 3091
| Galaxy NGC 3091 |
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|---|---|
![NGC 3091 with NGC 3096, LEDA 852084 (lu), PGC 28926 (u) & LEDA 28922 (ro) [1]](https://de.wikipedia.org/wiki/Datei:NGC_3091_DSS.jpg)
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| NGC 3091 with NGC 3096, LEDA 852084 (lu), PGC 28926 (u) & LEDA 28922 (ro) | |
| AladinLite | |
| Constellation | Water snake |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 10 h 00 m 14.290 s |
| declination | -19 ° 38 ′ 13.06 ″ |
| Appearance | |
| Morphological type | E3: |
| Brightness (visual) | 11.2 mag |
| Brightness (B-band) | 12.2 mag |
| Angular expansion | 3 ′ × 1.9 ′ |
| Position angle | 149 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Affiliation | HCG 42 NGC 3091 group LGG 186 |
| Redshift | 0.013222 ± 0.000033 |
| Radial velocity | (3964 ± 10) km / s |
|
Stroke distance v rad / H 0 |
(168 ± 12) · 10 6 ly (51.6 ± 3.6) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | February 7, 1785 |
| Catalog names | |
| NGC 3091 • PGC 28927 • ESO 566-041 • MCG -03-26-007 • 2MASX J10001412-1938113 • SGC 095752-1923.8 • HCG 42A • GC 1992 • H II 293 • h 3215 • GALEX J100014.1-193809 • LDCE 689 NED012 | |
NGC 3091 is an elliptical galaxy from the Hubble type E1 in the constellation Hydra south of the ecliptic . It is an estimated 168 million light-years from the Milky Way and about 155,000 light-years across. The galaxy is a member of the Hickson Compact Group HCG 42 and the brightest galaxy in the NGC 3091 group ( LGG 186 ).
In the same area of the sky are u. a. the galaxies NGC 3072 , NGC 3085 , NGC 3096 .
The object was discovered by Wilhelm Herschel on February 7, 1785 .
NGC 3091 group ( LGG 186 )
| Galaxy | Alternative name | Distance / million ly |
|---|---|---|
| NGC 3052 | PGC 28570 | 160 |
| NGC 3091 | PGC 28927 | 168 |
| NGC 3124 | PGC 29377 | 150 |
| PGC 28373 | ESO 566-019 | 157 |
| PGC 28922 | MCG-03-26-006 | 170 |
| PGC 28926 | 2MASX J10001284-1940203 |