NGC 945
| Galaxy NGC 945 |
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|---|---|
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| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 02 h 28 m 37.3 s |
| declination | -10 ° 32 ′ 20 ″ |
| Appearance | |
| Morphological type | SB (rs) c |
| Brightness (visual) | 12.1 mag |
| Brightness (B-band) | 12.8 mag |
| Angular expansion | 2.3 ′ × 2.2 ′ |
| Position angle | 10 ° |
| Surface brightness | 13.6 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 945 group LGG 63 |
| Redshift | 0.014944 ± 0.000023 |
| Radial velocity | 4480 ± 7 km / s |
|
Stroke distance v rad / H 0 |
(200 ± 14) x 10 6 ly (61.2 ± 4.3) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | November 28, 1785 |
| Catalog names | |
| NGC 945 • PGC 9426 • MCG -02-07-013 • IRAS 02261-1045 • 2MASX J02283732-1032211 • GC 547 • H II 487 • h 225/2480 • 2MASS J02283730-1032209 • LDCE 177 NED002 | |
NGC 945 is a bar-spiral galaxy of the Hubble type SBc in the constellation Cetus south of the celestial equator . It is estimated to be 200 million light years from the Milky Way and about 135,000 light years in diameter. Together with NGC 948, it forms a gravitationally bound galaxy pair.
In the same area of the sky are u. a. the galaxies NGC 942 , NGC 943 , NGC 950 , IC 230 .
The Type Ib Supernova SN 1998dt was observed here.
The object was discovered by Wilhelm Herschel on November 28, 1785 .