IC 4742
| Galaxy IC 4742 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | peacock |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 18 h 41 m 52.6 s |
| declination | -63 ° 51 ′ 43 ″ |
| Appearance | |
| Morphological type | E1 |
| Brightness (visual) | 12.1 mag |
| Brightness (B-band) | 13.1 mag |
| Angular expansion | 1.7 ′ × 1.4 ′ |
| Position angle | 20 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 422 |
| Redshift | 0.014794 ± 0.000097 |
| Radial velocity | 4435 ± 29 km / s |
|
Stroke distance v rad / H 0 |
(194 ± 14) · 10 6 ly (59.4 ± 4.2) Mpc |
| history | |
| discovery | DeLisle Stewart |
| Discovery date | July 20, 1901 |
| Catalog names | |
| IC 4742 • PGC 62270 • ESO 103-048 • 2MASX J18415254-6351437 • SGC 183705-6354.6 • LDCE 1323 NED020 | |
IC 4742 is an elliptical galaxy of the Hubble type E1 in the constellation Peacock in the southern sky . It is estimated to be 194 million light years away from the Milky Way and has a diameter of about 100,000 ly.
In the same area of the sky are the galaxies IC 4730 , IC 4744 , IC 4748 , IC 4749 .
The object was discovered by DeLisle Stewart on July 20, 1901 .