NGC 491
| Galaxy NGC 491 |
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|---|---|
|
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| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | sculptor |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 01 h 21 m 20.4 s |
| declination | -34 ° 03 ′ 48 ″ |
| Appearance | |
| Morphological type | SB (rs) b: |
| Brightness (visual) | 12.4 mag |
| Brightness (B-band) | 13.2 mag |
| Angular expansion | 1.4 ′ × 1 ′ |
| Position angle | 93 ° |
| Surface brightness | 12.6 mag / arcmin² |
| Physical data | |
| Redshift | 0.012902 ± 0.000033 |
| Radial velocity | 3868 ± 10 km / s |
|
Stroke distance v rad / H 0 |
(171 ± 12) · 10 6 ly (52.4 ± 3.7) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | September 25, 1834 |
| Catalog names | |
| NGC 491 • PGC 4914 • ESO 352-053 • MCG -06-04-011 • IRAS 01190-3419 • 2MASX J01212042-3403477 • GC 279 • h 2407 • GALEXASC J012120.38-340346.8 • LDCE 78 NED002 | |
NGC 491 is a bar-spiral galaxy of the Hubble type SBb in the constellation Sculptor in the southern sky . It is an estimated 171 million light years away from the Milky Way and has a diameter of about 70,000 ly.
Nearby is another galaxy, for which the designation NGC 491A was given.
The object was discovered on September 25, 1834 by the British astronomer John Herschel .
Web links
Commons : NGC 491 - collection of images, videos, and audio files
