IC 438
| Galaxy IC 438 |
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|---|---|
![IC 438 [1]](https://de.wikipedia.org/wiki/Datei:IC_438_DSS.jpg)
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| IC 438 | |
| AladinLite | |
| Constellation | Hare |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 05 h 53 m 00.08 s |
| declination | -17 ° 52 ′ 33.9 ″ |
| Appearance | |
| Morphological type | SA (rs) c |
| Brightness (visual) | 11.9 likes |
| Brightness (B-band) | 12.6 mag |
| Angular expansion | 2.8 ′ × 2.2 ′ |
| Position angle | 43 ° |
| Surface brightness | 13.7 mag / arcmin² |
| Physical data | |
| Affiliation | IC 438 group LGG 134 |
| Redshift | 0.010422 ± 0.000019 |
| Radial velocity | 3124 ± 6 km / s |
|
Stroke distance v rad / H 0 |
(133 ± 9) · 10 6 ly (40.7 ± 2.8) Mpc |
| history | |
| discovery | Lewis Swift |
| Discovery date | January 7, 1891 |
| Catalog names | |
| IC 438 • PGC 18047 • ESO 555-009 • MCG -03-15-025 • IRAS 05508-1753 • 2MASX J05530007-1752337 • SGC 055048-1753.2 • HIPASS J0552-17 • LDCE 407 NED015 • NVSS J055300-175229 | |
IC 438 is a bar-spiral galaxy of the Hubble type SBc in the constellation Rabbit in the southern sky . It is estimated to be 133 million light years from the Milky Way and about 115,000 light years in diameter. Probably together with IC 2151 it forms a gravitationally bound galaxy pair.
Together with four other galaxies, it forms the IC 438 group or LGG 134 .
The supernovae SN 1997B (Type-Ic) and SN 2017gbb ( Type-Ia ) were observed here.
The object was discovered by Lewis Swift on January 7, 1891 .
IC 438 group ( LGG 134 )
| Galaxy | Alternative name | Distance / million Lj |
|---|---|---|
| IC 438 | PGC 18047 | 133 |
| IC 2143 | PGC 17810 | 129 |
| PGC 17668 | ESO 554-029 | 116 |
| PGC 17976 | MCG -03-015-021 | 124 |
| PGC 18015 | ESO 555-005 | 129 |