NGC 4992
| Galaxy NGC 4992 |
|
|---|---|
|
|
| SDSS | |
| AladinLite | |
| Constellation | Virgin |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 13 h 09 m 05.6 s |
| declination | + 11 ° 38 ′ 03 ″ |
| Appearance | |
| Morphological type | Sa / Sy2 |
| Brightness (visual) | 13.6 mag |
| Brightness (B-band) | 14.5 mag |
| Angular expansion | 1.2 ′ × 0.7 ′ |
| Position angle | 10 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Redshift | 0.025137 ± 0.000157 |
| Radial velocity | 7536 ± 47 km / s |
|
Stroke distance v rad / H 0 |
(335 ± 23) x 10 6 ly (102.8 ± 7.2) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | April 4, 1831 |
| Catalog names | |
| NGC 4992 • UGC 8232 • PGC 45593 • CGCG 072-006 • MCG + 02-34-001 • 2MASX J13090558 + 1138026 • GC 3427 • h 1541 • GALEX ASC J130905.58 + 113803.4 | |
NGC 4992 is a 13.6 mag bright spiral galaxy with an active nucleus of the Hubble type Sa in the constellation of Virgo on the ecliptic . It is estimated to be 335 million light years from the Milky Way and about 120,000 light years in diameter.
The object was discovered on April 4, 1831 by John Herschel .
Web links
- NGC 4992. SIMBAD , accessed February 23, 2015 .
- NGC 4992. DSO Browser, accessed February 23, 2015 .
- Auke Slotegraaf: NGC 4992. Deep Sky Observer's Companion, accessed on February 23, 2015 .