NGC 5156
| Galaxy NGC 5156 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | centaur |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 13 h 28 m 44.1 s |
| declination | -48 ° 55 ′ 01 ″ |
| Appearance | |
| Morphological type | SB (r) bc |
| Brightness (visual) | 11.7 mag |
| Brightness (B-band) | 12.5 mag |
| Angular expansion | 2.5 ′ × 2.0 ′ |
| Position angle | 110 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 342 |
| Redshift | 0.009967 +/- 0.000013 |
| Radial velocity | 2988 +/- 4 km / s |
|
Stroke distance v rad / H 0 |
(126 ± 9) · 10 6 ly (38.6 ± 2.7) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | March 31, 1835 |
| Catalog names | |
| NGC 5156 • PGC 47283 • ESO 220-013 • IRAS 13256-4839 • SGC 132542-4839.5 • GC 3547 • h 3510 • LDCE 0916 NED168 | |
NGC 5156 is an 11.7 mag bright barred spiral galaxy of the Hubble type SBb in the constellation Centaur , about 126 million light years away from the Milky Way.
It was discovered by John Herschel on March 31, 1835 with an 18-inch reflector telescope, which during two observations “pretty bright, slightly elongated, gradually a little brighter in the middle; has an 8th mag star 5 ′ distant, pos. Sp ”and“ pretty faint, irregularly round, or triangular; gradually brighter in the middle; resolvable; 40 arcseconds ”.