IC 1555
| Galaxy IC 1555 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | sculptor |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 00 h 34 m 32.6 s |
| declination | -30 ° 01 ′ 04 ″ |
| Appearance | |
| Morphological type | SA (s) d / HII |
| Brightness (visual) | 13.7 mag |
| Brightness (B-band) | 14.4 mag |
| Angular expansion | 1.3 ′ × 0.9 ′ |
| Position angle | 126 ° |
| Surface brightness | 13.7 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 134 group LGG 7 |
| Redshift | 0.005237 ± 0.000017 |
| Radial velocity | 1570 ± 5 km / s |
|
Stroke distance v rad / H 0 |
(70 ± 5) · 10 6 ly (21.4 ± 1.5) Mpc |
| diameter | 25,000 ly |
| history | |
| discovery | Lewis Swift |
| Discovery date | May 20, 1889 |
| Catalog names | |
| IC 1555 • PGC 2071 • ESO 410-21 • MCG -05-02-019 • 2MASX J00343274-3001045 • SGC 003205-3017.7 • AM 0032-301 | |
IC 1555 is a spiral galaxy with extensive star formation regions of the Hubble type Scd in the constellation Sculptor in the southern sky . It is estimated to be 70 million light years from the Milky Way and about 25,000 ly in diameter.
Together with NGC 115 , NGC 131 , NGC 134 , NGC 148 , IC 1554 and PGC 2044 , it forms the NGC 134 group .
The object was discovered on May 22, 1889 by the American astronomer Lewis Swift .