IC 4728
| Galaxy IC 4728 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | peacock |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 18 h 37 m 57.00 s |
| declination | -62 ° 31 ′ 51.3 ″ |
| Appearance | |
| Morphological type | (R'_2) SB (s) b |
| Brightness (visual) | 13.5 likes |
| Brightness (B-band) | 14.3 mag |
| Angular expansion | 2.00 'x 0.7' |
| Position angle | 173 ° |
| Surface brightness | 13.7 mag / arcmin² |
| Physical data | |
| Affiliation | IC 4765 group LGG 422 |
| Redshift | 0.015271 ± 0.000150 |
| Radial velocity | 4578 ± 45 km / s |
|
Stroke distance v rad / H 0 |
(200 ± 14) · 10 6 ly (61.4 ± 4.3) Mpc |
| history | |
| discovery | DeLisle Stewart |
| Discovery date | July 20, 1901 |
| Catalog names | |
| IC 4728 • PGC 62166 • ESO 103-034 • IRAS 18333-6234 • 2MASX J18375700-6231511 • SGC 183316-6234.3 • 2MASS J18375698-6231513 • LDCE 1323 NED009 • WISEA J183756.95-623151.9 | |
IC 4728 is a bar-spiral galaxy of the Hubble type SBab in the constellation Peacock in the southern sky . It is estimated to be 200 million light years from the Milky Way and about 120,000 light years in diameter. Together with thirty other galaxies, it forms the IC 4765 group ( LGG 422 ).
In the same area of the sky are u. a. the galaxies IC 4726 , IC 4727 , IC 4731 , IC 4737 .
The object was discovered by DeLisle Stewart on July 20, 1901 .