NGC 947
| Galaxy NGC 947 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 02 h 28 m 33.1 s |
| declination | -19 ° 02 ′ 32 ″ |
| Appearance | |
| Morphological type | SA (r) c |
| Brightness (visual) | 12.6 mag |
| Brightness (B-band) | 13.3 mag |
| Angular expansion | 2.1 ′ × 1.1 ′ |
| Position angle | 50 ° |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Redshift | 0.016495 ± 0.000013 |
| Radial velocity | 4945 ± 4 km / s |
|
Stroke distance v rad / H 0 |
(219 ± 15) x 10 6 ly (67.2 ± 4.7) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | November 10, 1835 |
| Catalog names | |
| NGC 947 • PGC 9420 • ESO 545-021 • MCG -03-07-022 • IRAS 02262-1915 • 2MASX J02283311-1902318 • SGC 022613-1915.8 • HIPASS J0228-19 | |
NGC 947 is a barred spiral galaxy of the Hubble type SBc in the constellation Whale north of the ecliptic . It is estimated to be 219 million light years from the Milky Way and about 135,000 ly in diameter.
The object was discovered on November 10, 1835 by John Herschel .