IC 4889
| Galaxy IC 4889 / IC 4891 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | telescope |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 19 h 45 m 15.1 s |
| declination | -54 ° 20 ′ 39 ″ |
| Appearance | |
| Morphological type | E5-6 / Sy2 |
| Brightness (visual) | 11.1 mag |
| Brightness (B-band) | 12.1 mag |
| Angular expansion | 2.2 ′ × 1.5 ′ |
| Position angle | 0 ° |
| Surface brightness | 12.8 mag / arcmin² |
| Physical data | |
| Redshift | 0.008586 ± 0.000014 |
| Radial velocity | 2574 ± 4 km / s |
|
Stroke distance v rad / H 0 |
(113 ± 8) · 10 6 ly (34.5 ± 2.4) Mpc |
| history | |
| discovery | Royal H. Frost |
| Discovery date | August 31, 1904 |
| Catalog names | |
| IC 4889 • IC 4891 • PGC 63620 • PGC 63621 • ESO 185-014 • 2MASX J19451516-5420389 • SGC 194118-5427.9 • HIPASS J1945-54 | |
IC 4889 = IC 4891 is an elliptical galaxy with an active nucleus of the Hubble type E5 in the constellation Telescope in the southern sky . It is estimated to be 113 million light years from the Milky Way and about 75,000 light years in diameter. Together with IC 4888 it forms a gravitationally bound galaxy pair.
The object was discovered by Royal Harwood Frost on August 31, 1904 .