NGC 6255
| Galaxy NGC 6255 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Hercules |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 16 h 54 m 47.9 s |
| declination | + 36 ° 30 ′ 04 ″ |
| Appearance | |
| Morphological type | SBcd |
| Brightness (visual) | 12.8 mag |
| Brightness (B-band) | 13.5 likes |
| Angular expansion | 3.6 ′ × 1.5 ′ |
| Position angle | 85 ° |
| Surface brightness | 13.5 mag / arcmin² |
| Physical data | |
| Redshift | 0.003065 +/- 0.000007 |
| Radial velocity | 919 +/- 2 km / s |
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Stroke distance v rad / H 0 |
(48 ± 3) x 10 6 ly (14.8 ± 1.0) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | May 16, 1787 |
| Catalog names | |
| NGC 6255 • UGC 10606 • PGC 59244 • CGCG 197-018 • MCG + 06-37-014 • IRAS 16530 + 3634 • KUG 1653 + 365 • GC 4257 • H III 689 • h 1973 • | |
NGC 6255 is a 12.8 mag bright bar -spiral-shaped Low Surface Brightness Galaxy of the Hubble-type SBc in the constellation Hercules and about 48 million light years from the Milky Way.
It was discovered on May 16, 1787 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as "eF, cL, iE, nearly in parallel".
Web links
- NGC 6255.SIMBAD , accessed July 13, 2016 .
- NGC 6255. DSO Browser, accessed July 13, 2016 .