NGC 4922
| Galaxy NGC 4922 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Berenike's hair |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 13 h 01 m 24.9 s |
| declination | + 29 ° 18 ′ 40 ″ |
| Appearance | |
| Morphological type | E0 / Sy2 / LINER : |
| Brightness (visual) | 13.2 mag |
| Brightness (B-band) | 14.2 mag |
| Angular expansion | 1.3 ′ × 1.0 ′ |
| Position angle | 129 ° |
| Surface brightness | 13.6 mag / arcmin² |
| Physical data | |
| Redshift | 0.023586 +/- 0.000030 |
| Radial velocity | 7071 +/- 9 km / s |
|
Stroke distance v rad / H 0 |
(317 ± 22) x 10 6 ly (97.1 ± 6.8) Mpc |
| history | |
| discovery | Heinrich d'Arrest |
| Discovery date | April 19, 1865 |
| Catalog names | |
| NGC 4922 • UGC 8135 • PGC 44896 • CGCG 160-096 • MCG + 05-31-099 • IRAS 12590 + 2934 • VV 609 • GC 5709 • | |
NGC 4922 (also called NGC 4922 A or NGC 4922-1 ) is a 13.24 mag bright elliptical galaxy with an active nucleus of the Hubble type "E0" in the constellation Haar der Berenike in the northern sky . It is estimated to be 317 million light years from the Milky Way and about 120,000 light years in diameter.
The galaxy belongs to the Coma galaxy cluster and forms a gravitationally bound galaxy pair with the non-NGC object PGC 86794 (also called NGC 4922 B or NGC 4922-2 ) .
The galaxies IC 842 , IC 843 , IC 4032 , IC 4088 are located in the same area of the sky .
The object was discovered on April 19, 1865 by Heinrich Louis d'Arrest , who noted "pretty bright, small, round, a little brighter towards the middle, with a star of 11th or 12th magnitude following".