IC 4242
| Galaxy IC 4242 |
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|---|---|
![IC 4242 with LEDA 1928180 (l.) [1] & (SMB) 2863 (above)](https://de.wikipedia.org/wiki/Datei:IC4242_-_SDSS_DR14.jpg)
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| IC 4242 with LEDA 1928180 (left) & (SMB) 2863 ( top ) | |
| AladinLite | |
| Constellation | Hunting dogs |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 13 h 24 m 40.9 s |
| declination | + 31 ° 01 ′ 35 ″ |
| Appearance | |
| Morphological type | S01 |
| Brightness (visual) | 15.0 mag |
| Brightness (B-band) | 16.0 mag |
| Angular expansion | 0.5 ′ × 0.3 ′ |
| Position angle | 125 ° |
| Surface brightness | 12.8 mag / arcmin² |
| Physical data | |
| Redshift | 0.023933 ± 0.000057 |
| Radial velocity | 7175 ± 17 km / s |
|
Stroke distance v rad / H 0 |
(322 ± 23) x 10 6 ly (98.8 ± 6.9) Mpc |
| history | |
| discovery | Stéphane Javelle |
| Discovery date | June 30, 1896 |
| Catalog names | |
| IC 4242 • PGC 1928313 • 2MASX J13244099 + 3101351 • GALEX ASC J132440.97 + 310135.4 • ASK 533939.0 • NSA 93595 | |
IC 4242 is a lenticular galaxy of the Hubble type S0 in the constellation Hounds in the northern sky . It is estimated to be 322 million light years from the Milky Way and about 45,000 light years in diameter.
In the same area of the sky are the galaxies NGC 5131 , IC 4238 , IC 4239 , IC 4240 .
The object was discovered by Stéphane Javelle on June 30, 1896 .