NGC 5477
| Galaxy NGC 5477 |
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|---|---|
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| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Big Bear |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 14 h 05 m 33.3 s |
| declination | + 54 ° 27 ′ 40 ″ |
| Appearance | |
| Morphological type | SA (s) w |
| Brightness (visual) | 13.7 mag |
| Brightness (B-band) | 14.3 mag |
| Angular expansion | 1 ′, 6 × 1 ′, 3 |
| Position angle | 95 ° |
| Surface brightness | 14.3 mag / arcmin² |
| Physical data | |
| Affiliation | M 101 group LGG 371 |
| Redshift | 0.001014 ± 0.000017 |
| Radial velocity | 304 ± 5 km / s |
|
Stroke distance v rad / H 0 |
(19 ± 1) x 10 6 ly (5.81 ± 0.42) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 14, 1789 |
| Catalog names | |
| NGC 5477 • UGC 9018 • PGC 50262 • CGCG 272-25 • MCG + 09-23-034 • IRAS F14038 + 5441 • KUG 1403 + 546 • VV 561 • GC 3787 • H III 790 • DDO 186 | |
NGC 5477 is an irregular dwarf galaxy in the constellation Great Bear in the northern sky . It is an estimated 19 million light years from the Milky Way and belongs to a group of galaxies around Messier 101 .
The object was discovered on April 14, 1789 by the German-British astronomer Wilhelm Herschel .
Web links
- astronews.com: Picture of the day January 7, 2013
- Spektrum.de : Map of the area