NGC 7491
| Galaxy NGC 7491 |
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|---|---|
|
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| SDSS recording | |
| AladinLite | |
| Constellation | Aquarius |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 23 h 08 m 06.0 s |
| declination | -05 ° 58 ′ 00 ″ |
| Appearance | |
| Morphological type | Sbc |
| Brightness (visual) | 13.8 mag |
| Brightness (B-band) | 14.6 mag |
| Angular expansion | 1.0 '× 0.7' |
| Position angle | 172 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Redshift | 0.020774 +/- 0.000107 |
| Radial velocity | 6228 +/- 32 km / s |
|
Stroke distance v rad / H 0 |
(283 ± 20) x 10 6 ly (86.8 ± 6.1) Mpc |
| history | |
| discovery | Edouard Stephan |
| Discovery date | August 21, 1881 |
| Catalog names | |
| NGC 7491 • PGC 70546 • MCG -01-59-002 • 2MASX J23080596-0558001 • NVSS J230806-055805 | |
NGC 7491 is a spiral galaxy with extensive star formation regions of the Hubble type Sbc in the constellation Aquarius on the ecliptic . It is estimated to be 283 million light years from the Milky Way and about 80,000 light years in diameter.
The object was discovered by Edouard Stephan on August 21, 1881 .