NGC 4802
| Galaxy NGC 4802 / NGC 4804 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Crow |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 55 m 49.6 s |
| declination | -12 ° 03 ′ 19 ″ |
| Appearance | |
| Morphological type | SA (r) 0? |
| Brightness (visual) | 11.6 mag |
| Brightness (B-band) | 12.6 mag |
| Angular expansion | 2.4 ′ × 1.6 ′ |
| Position angle | 20 ° |
| Surface brightness | 12.9 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 307 |
| Redshift | 0.003139 ± 0.000150 |
| Radial velocity | 941 ± 45 km / s |
|
Stroke distance v rad / H 0 |
(37 ± 3) x 10 6 ly (11.4 ± 1.0) Mpc |
| diameter | 25,000 ly |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | March 27, 1786 |
| Catalog names | |
| NGC 4802, 4804 • PGC 44087 • MCG -02-33-061 • IRAS 12532-1147 • 2MASX J12554963-1203192 • GC 3307 • H IV 40 • | |
NGC 4802 = NGC 4804 is an 11.6 mag bright, lens-shaped dwarf galaxy of the Hubble type S0 in the constellation Raven south of the ecliptic . It is estimated to be 37 million light-years away from the Milky Way and has a diameter of about 25,000 ly
. a. the galaxies NGC 4782 , NGC 4783 , NGC 4792 , NGC 4794 .
The object was discovered on March 27, 1786 by Wilhelm Herschel with an 18.7-inch reflector telescope , which she labeled “suspected. A pB star with a seeming brush to it np may be a vS neb. close to it. No time to verify it “(observation listed in the catalog as NGC 4804 ); then on April 20, 1882 by Ernst Wilhelm Leberecht Tempel (and listed as NGC 4802 ).