NGC 531
| Galaxy NGC 531 |
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|---|---|
|
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| Image of the HCG 10 with an 80 cm telescope. NGC 531 is at the top left. | |
| AladinLite | |
| Constellation | Andromeda |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 01 h 26 m 18.9 s |
| declination | + 34 ° 45 ′ 14 ″ |
| Appearance | |
| Morphological type | SB0 / a: |
| Brightness (visual) | 14.0 mag |
| Brightness (B-band) | 14.9 mag |
| Angular expansion | 1.8 ′ × 0.5 ′ |
| Position angle | 34 ° |
| Surface brightness | 13.7 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 26 |
| Redshift | 0.015544 ± 0.000107 |
| Radial velocity | 4660 ± 32 km / s |
|
Stroke distance v rad / H 0 |
(215 ± 15) · 10 6 ly (65.8 ± 4.6) Mpc |
| history | |
| discovery | RJ Mitchell |
| Discovery date | October 16, 1855 |
| Catalog names | |
| NGC 531 • UGC 1012 • PGC 5340 • CGCG 521-024 • MCG + 06-04-020 • 2MASX J01261884 + 3445147 • HCG 10C • GC 312 • LDCE 0074 NED084 | |
NGC 531 is a lenticular galaxy in the constellation Andromeda , which is about 215 million light years from the Milky Way . NGC 531 together with the galaxies NGC 529 , NGC 536 and NGC 542 form the Hickson Compact Group 10, abbreviated as HCG 10.
Johan Ludvig Emil Dreyer noted William Parsons as the discoverer . The observation was carried out on October 16, 1855, however, by his then assistant RJ Mitchell .