IC 4889
Galaxy IC 4889 / IC 4891 |
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AladinLite | |
Constellation | telescope |
Position equinox : J2000.0 , epoch : J2000.0 |
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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 .