IC 742
| Galaxy IC 742 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | lion |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 11 h 51 m 02.2 s |
| declination | + 20 ° 47 ′ 59 ″ |
| Appearance | |
| Morphological type | SBab |
| Brightness (visual) | 13.9 likes |
| Brightness (B-band) | 14.7 mag |
| Angular expansion | 1.20 × 1.1 |
| Surface brightness | 14.1 mag / arcmin² |
| Physical data | |
| Redshift | 0.021431 +/- 0.000023 |
| Radial velocity | 6425 +/- 7 km / s |
|
Stroke distance v rad / H 0 |
(285 ± 20) x 10 6 ly (87.4 ± 6.1) Mpc |
| history | |
| discovery | Lewis Swift |
| Discovery date | April 22, 1889 |
| Catalog names | |
| IC 742 • UGC 6822 • PGC 37056 • CGCG 127-073 • MCG + 04-28-068 • 2MASX J11510223 + 2047591 • USGC U427 NED16 • SDSS J115102.25 + 204758.9 | |
IC 742 is a bar-spiral galaxy of the Hubble type SBab in the constellation Leo north of the ecliptic . It is estimated to be 285 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 NGC 3929 , NGC 3937 , NGC 3940 , IC 2968 , among others .
The object was discovered on April 22, 1889 by the astronomer Lewis Swift .