IC 1657
| Galaxy IC 1657 / IC 1663 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | sculptor |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 01 h 14 m 07.0 s |
| declination | -32 ° 39 ′ 03 ″ |
| Appearance | |
| Morphological type | (R ') SB (s) bc / Sy2 / HII |
| Brightness (visual) | 12.4 mag |
| Brightness (B-band) | 13.2 mag |
| Angular expansion | 2.4 ′ × 0.6 ′ |
| Position angle | 170 ° |
| Surface brightness | 12.6 mag / arcmin² |
| Physical data | |
| Redshift | 0.011952 ± 0.000013 |
| Radial velocity | 3583 ± 4 km / s |
|
Stroke distance v rad / H 0 |
(159 ± 11) · 10 6 ly (48.6 ± 3.4) Mpc |
| history | |
| discovery | Lewis Swift |
| Discovery date | September 4, 1897 |
| Catalog names | |
| IC 1657/1663 • PGC 4440 • ESO 352-024 • MCG -06-03-030 • IRAS 1117-3254 • 2MASX J01140701-3239032 • SGC 11147-3254.9 • HIPASS J0114-32 • LDCE 78 NED001 | |
IC 1657 = IC 1663 is an active elliptical galaxy with extensive star formation areas of the Hubble type SBbc in the Sculptor constellation in the southern sky . It is an estimated 159 million light years from the Milky Way and about 115,000 light years across.
In the same area of the sky are u. a. the galaxies NGC 427 , NGC 439 , NGC 441 .
The Type Ia supernova SN 2012hd was observed here.
The object was discovered by Lewis Swift on September 4, 1897 .