NGC 4551
| Galaxy NGC 4551 |
|
|---|---|
|
|
| SDSS | |
| AladinLite | |
| Constellation | Virgin |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 35 m 37.9 s |
| declination | + 12 ° 15 ′ 50 ″ |
| Appearance | |
| Morphological type | E2 |
| Brightness (visual) | 12.0 mag |
| Brightness (B-band) | 13.0 likes |
| Angular expansion | 1.8 '× 1.4' |
| Position angle | 70 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Affiliation | Virgo cluster Messier 87 group NGC 4639 group LGG 289 |
| Redshift | 0.003923 ± 0.000017 |
| Radial velocity | 1176 ± 5 km / s |
|
Stroke distance v rad / H 0 |
(50 ± 4) x 10 6 ly (15.4 ± 1.1) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | April 17, 1784 |
| Catalog names | |
| NGC 4551 • UGC 7759 • PGC 41963 • CGCG 070-183 • MCG + 02-32-148 • 2MASX J12353797 + 1215504 • VCC 1630 • GC 3096 • H I 37 • h 1349 • GALEX ASC J123537.97 + 121551.5 • LDCE 904 NED195 • HOLM 422B • EVCC 0922 | |
NGC 4551 is an elliptical galaxy of Hubble type E2 in the constellation Virgo north of the ecliptic . It is estimated to be 50 million light years away from the Milky Way and about 25,000 light years in diameter. It is listed as a member of the Virgo galaxy cluster under catalog number VVC 1630 . Together with NGC 4550, it forms the optical galaxy pair Holm 422 .
In the same area of the sky are u. a. the galaxies NGC 4550 , NGC 4552 , IC 3574 , IC 3586 .
The object was discovered by Wilhelm Herschel on April 17, 1784 .