NGC 5255
Galaxy NGC 5255 |
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SDSS recording | |
AladinLite | |
Constellation | Big Bear |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 13 h 37 m 18.1 s |
declination | + 57 ° 06 ′ 32 ″ |
Appearance | |
Morphological type | S? |
Brightness (visual) | 14.5 mag |
Brightness (B-band) | 15.4 mag |
Angular expansion | 0.8 ′ × 0.2 ′ |
Position angle | 24 ° |
Surface brightness | 12.4 mag / arcmin² |
Physical data | |
Redshift | 0.023209 +/- 0.000070 |
Radial velocity | 6958 +/- 21 km / s |
Stroke distance v rad / H 0 |
(316 ± 22) · 10 6 ly (96.9 ± 6.8) Mpc |
history | |
discovery | Wilhelm Herschel |
Discovery date | April 17, 1789 |
Catalog names | |
NGC 5255 • PGC 48124 • CGCG 294-051 • MCG + 10-19-98 • GC 3622 • H III 803 • |
NGC 5255 is a 14.5 mag bright spiral galaxy of the Hubble type Sa in the constellation Great Bear . It is an estimated 316 million light years from the Milky Way .
The object was discovered on April 17, 1789 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as “suspected eF, vS”.
Web links
- NGC 5255.SIMBAD , accessed February 8, 2016 .
- NGC 5255. DSO Browser, accessed February 8, 2016 .