IC 2557
| Galaxy IC 2557 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Little lion |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 10 h 16 m 05.9 s |
| declination | + 38 ° 06 ′ 33 ″ |
| Appearance | |
| Morphological type | S0 / a |
| Brightness (visual) | 15.3 mag |
| Brightness (B-band) | 16.1 mag |
| Angular expansion | 0.30 × 0.2 |
| Position angle | 93 ° |
| Surface brightness | 12.1 mag / arcmin² |
| Physical data | |
| Redshift | 0.021642 ± 0.000133 |
| Radial velocity | 6488 ± 40 km / s |
|
Stroke distance v rad / H 0 |
(290 ± 20) x 10 6 ly (88.8 ± 6.2) Mpc |
| history | |
| discovery | Stéphane Javelle |
| Discovery date | May 16, 1903 |
| Catalog names | |
| IC 2557 • PGC 29977 • CGCG 183-007 • MCG + 06-23-003 • 2MASX J10160583 + 3806334 • GALEX ASC J101605.87 + 380633.4 | |
IC 2557 is a lenticular galaxy of the Hubble type S0 / a in the constellation Little Leo in the northern sky . It is an estimated 290 million light years from the Milky Way and about 25,000 light years in diameter .
The galaxies NGC 3151 , NGC 3159 , NGC 3161 , NGC 3163 are located in the same area of the sky .
The object was discovered by Stéphane Javelle on May 16, 1903 .