IC 4981
| Galaxy IC 4981 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | peacock |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 20 h 19 m 39.20 s |
| declination | -70 ° 50 ′ 54.7 ″ |
| Appearance | |
| Morphological type | I / pec |
| Brightness (visual) | 13.8 mag |
| Brightness (B-band) | 14.4 mag |
| Angular expansion | 1.00 'x 0.3' |
| Position angle | 135 ° |
| Surface brightness | 12.3 mag / arcmin² |
| Physical data | |
| Affiliation | Pavo I group NGC 6876 group LGG 432 |
| Redshift | 0.012715 ± 0.000067 |
| Radial velocity | 3812 ± 20 km / s |
|
Stroke distance v rad / H 0 |
(165 ± 12) · 10 6 ly (50.7 ± 3.6) Mpc |
| history | |
| discovery | DeLisle Stewart |
| Discovery date | September 21, 1900 |
| Catalog names | |
| IC 4981 • PGC 64486 • ESO 073-038 • 2MASX J20193921-7050546 • SGC 201426-7100.3 • GALEX ASC J201939.42-705054.5 • WISEA J201939.36-705054.5 | |
IC 4981 is an irregular galaxy from the Hubble type I / P in the constellation Peacock the southern sky . It is estimated to be 165 million light years from the Milky Way and about 50,000 light years in diameter. Together with NGC 6880 , it forms a gravitationally bound galaxy pair. She is considered a member of the ten galaxies counting NGC 6876 group ( LGG 432 ).
In the same area of the sky are u. a. the galaxies NGC 6876 , NGC 6877 , IC 4982 , IC 4985 .
The object was discovered by DeLisle Stewart on September 21, 1900 .