NGC 5491
| Galaxy NGC 5491 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Virgin |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 14 h 10 m 57.3 s |
| declination | + 06 ° 21 ′ 53 ″ |
| Appearance | |
| Morphological type | Sb / HII |
| Brightness (visual) | 13.1 mag |
| Brightness (B-band) | 13.9 likes |
| Angular expansion | 1.4 ′ × 0.8 ′ |
| Position angle | 78 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Redshift | 0.019647 +/- 0.000030 |
| Radial velocity | 5890 +/- 9 km / s |
|
Stroke distance v rad / H 0 |
(263 ± 18) · 10 6 ly (80.5 ± 5.6) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | May 12, 1793 |
| Catalog names | |
| NGC 5491, 5491A • UGC 9072 • PGC 50630 • CGCG 046-063 • MCG + 01-36-22 • IRAS 14084 + 0636 • GC 3799 • H II 890 • h 1753 • | |
NGC 5491 , also called NGC 5491A , is a 13.1 mag bright spiral galaxy of the Hubble type Sb in the constellation Virgo and about 263 million light years from the Milky Way.
Together with the non-NGC object PGC 214225 (also called NGC 5491B ) it forms a gravitationally bound double galaxy and was discovered on May 12, 1793 by Wilhelm Herschel with an 18.7-inch reflector telescope, who marked it with "pB, pL, iR ”.