IC 4731
| Galaxy IC 4731 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | peacock |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 18 h 38 m 42.98 s |
| declination | -62 ° 56 ′ 34.9 ″ |
| Appearance | |
| Morphological type | SB (r) 0+: |
| Brightness (visual) | 11.9 likes |
| Brightness (B-band) | 12.8 mag |
| Angular expansion | 1.50 'x 0.7' |
| Position angle | 82 ° |
| Surface brightness | 11.8 mag / arcmin² |
| Physical data | |
| Redshift | 0.015074 ± 0.000070 |
| Radial velocity | 4519 ± 21 km / s |
|
Stroke distance v rad / H 0 |
(198 ± 14) · 10 6 ly (60.6 ± 4.3) Mpc |
| history | |
| discovery | DeLisle Stewart |
| Discovery date | July 20, 1901 |
| Catalog names | |
| IC 4731 • PGC 62187 • ESO 103-037 • 2MASX J18384297-6256346 • SGC 183400-6259.2 • 2MASS J18384297-6256351 • LDCE 1323 NED011 • WISEA J183842.99-625635.0 | |
IC 4731 is a lenticular galaxy of the Hubble type SB0 / a in the constellation Peacock in the southern sky . It is estimated to be 198 million light years from the Milky Way and about 90,000 light years in diameter.
In the same area of the sky are u. a. the galaxies IC 4726 , IC 4730 , IC 4735 , IC 4737 .
The object was discovered by DeLisle Stewart on July 20, 1901 .