IC 2531
| Galaxy IC 2531 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Air pump |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 09 h 59 m 55.8 s |
| declination | -29 ° 37 ′ 01 ″ |
| Appearance | |
| Morphological type | Sb / HII |
| Brightness (visual) | 12.4 mag |
| Brightness (B-band) | 13.1 mag |
| Angular expansion | 6.9 ′ × 0.6 ′ |
| Position angle | 75 ° |
| Surface brightness | 13.8 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 3054 group IC 2537 group LGG 185 |
| Redshift | 0.008246 ± 0.000017 |
| Radial velocity | 2472 ± 5 km / s |
|
Stroke distance v rad / H 0 |
(101 ± 7) x 10 6 ly (30.9 ± 2.2) Mpc |
| history | |
| discovery | Lewis Swift |
| Discovery date | February 15, 1898 |
| Catalog names | |
| IC 2531 • PGC 28909 • ESO 435-025 • MCG -05-24-015 • 2MASX J09595554-2937040 • SGC 095741-2922.5 • HIPASS J0959-29 • LDCE 729 NED029 | |
IC 2531 is a spiral galaxy with extensive star formation regions of the Hubble type Sc in the constellation Antlia south of the celestial equator . It is estimated to be 101 million light years away from the Milky Way and about 220,000 light years in diameter.
The galaxy is a member of the NGC 3054 group , which continues to include NGC 3051 , NGC 3054 , NGC 3078 , NGC 3084 , NGC 3089 , IC 2537, and PGC 28874 .
The Type Ia supernova SN 2007cj was observed here.
The object was discovered by Lewis Swift on February 15, 1898 .