IC 1657
Spiral galaxy
From Wikipedia, the free encyclopedia
IC 1657 (also known as IC 1663) is an active barred spiral galaxy with extended star-forming regions of the Hubble type SBbc in the constellation of Sculptor in the southern sky. It is estimated to be about 159 million light-years from the Milky Way and has a diameter of approximately 115,000 light-years.
Right ascension01h 14m 07.0s[1]
Declination−32° 39′ 03″[1]
| IC 1657 / IC 1663 | |
|---|---|
IC 1657 imaged by DESI Legacy Survey | |
| Observation data | |
| Constellation | Sculptor |
| Right ascension | 01h 14m 07.0s[1] |
| Declination | −32° 39′ 03″[1] |
| Redshift | 0.011952 ± 0.000013[1] |
| Heliocentric radial velocity | 3583±4 km/s[1] |
| Distance | 159 ± 11 Mly (48.6 ± 3.4 Mpc)[1] |
| Apparent magnitude (V) | 12.4[2] |
| Apparent magnitude (B) | 13.2[2] |
| Surface brightness | 12.6[2] |
| Characteristics | |
| Type | (R')SB(s)bc; Sy2; H II[1] |
| Apparent size (V) | 2.40′ × 0.6′[2] |
| Notable features | Position angle: 170°;[2] galaxy group: LDCE 78[1] |
| Other designations | |
| IRAS 1117-3254, 2MASX J01140701-3239032, IC 1657/1663, MCG -06-03-030, PGC 4440 | |
In the same region of the sky lie, among others, the galaxies NGC 427, NGC 439, and NGC 441.
The object was discovered on 4 September 1897 by Lewis Swift.[3]
Supernovae
Two supernovae have been observed in IC 1657:
