NGC 2555
| Galaxy NGC 2555 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Water snake |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 08 h 17 m 56.4 s |
| declination | + 00 ° 44 ′ 44 ″ |
| Appearance | |
| Morphological type | SB (rs) off |
| Brightness (visual) | 12.5 mag |
| Brightness (B-band) | 13.3 mag |
| Angular expansion | 1.9 ′ × 1.4 ′ |
| Position angle | 115 ° |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Redshift | 0.014720 ± 0.000090 |
| Radial velocity | 4413 ± 27 km / s |
|
Stroke distance v rad / H 0 |
(190 ± 13) · 10 6 ly (58.4 ± 4.1) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | December 20, 1784 |
| Catalog names | |
| NGC 2555 • UGC 4319 • PGC 23259 • CGCG 003-028 • MCG + 00-21-012 • 2MASX J08175639 + 0044445 • GC 1641 • H III 256 • h 498 • NSA 156594 • HOLM 95A | |
NGC 2555 is a barred spiral galaxy of the Hubble type SBab in the constellation Hydra south of the ecliptic . It is estimated to be 190 million light years from the Milky Way and about 105,000 ly in diameter.
The object was discovered by Wilhelm Herschel on December 20, 1784 .