IC 4557
| Galaxy IC 4557 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Bear keeper |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 15 h 34 m 36.9 s |
| declination | + 39 ° 43 ′ 44 ″ |
| Appearance | |
| Morphological type | E2 |
| Brightness (visual) | 14.9 mag |
| Brightness (B-band) | 15.7 mag |
| Angular expansion | 0.4 ′ × 0.3 ′ |
| Position angle | 135 ° |
| Surface brightness | 12.4 mag / arcmin² |
| Physical data | |
| Redshift | ? |
| Radial velocity | ? km / s |
| distance | ? pc |
| history | |
| discovery | Stéphane Javelle |
| Discovery date | July 24, 1903 |
| Catalog names | |
| IC 4557 • PGC 55483 • CGCG 222-026 • 2MASX J15343692 + 3943435 • GALEX ASC J153437.02 + 394343.2 • SDSS J153436.92 + 394343.9 | |
IC 4557 is a spiral galaxy of Hubble type S in the constellation Bootes the northern sky . In the same area of the sky are u. a. the galaxies NGC 5966 , IC 4560 , IC 4563 .
The object was discovered by Stéphane Javelle on July 24, 1903 .