NGC 842
| Galaxy NGC 842 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 02 h 09 m 50.8 s |
| declination | -07 ° 45 ′ 45 ″ |
| Appearance | |
| Morphological type | SAB0 (r)? |
| Brightness (visual) | 12.7 mag |
| Brightness (B-band) | 13.7 mag |
| Angular expansion | 1.6 ′ × 0.8 ′ |
| Position angle | 150 ° |
| Surface brightness | 12.9 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 044 |
| Redshift | 0.012866 ± 0.000103 |
| Radial velocity | 3857 ± 31 km / s |
|
Stroke distance v rad / H 0 |
(173 ± 12) · 10 6 ly (52.9 ± 3.7) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | January 8, 1831 |
| Catalog names | |
| NGC 842 • PGC 8258 • MCG -01-6-55 • 2MASX J02095079-0745446 • GC 500 • h 203 • LDCE 0138 NED007 | |
NGC 842 is the name of a lenticular galaxy of the Hubble type S0 in the constellation Whale in the New General Catalog . It is an estimated 173 million light years from the Milky Way . Together with NGC 829 , NGC 830 , NGC 788 and IC 183 , it forms the NGC 788 group .
The galaxy was by astronomer John Herschel using on 8 January 1831 of a 18.7-inch - telescope discovered.