IC 4197
| Galaxy IC 4197 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Water snake |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 13 h 08 m 04.33 s |
| declination | -23 ° 47 ′ 48.7 ″ |
| Appearance | |
| Morphological type | SAB0- / LINER |
| Brightness (visual) | 12.4 mag |
| Brightness (B-band) | 13.5 likes |
| Angular expansion | 1.40 'x 0.9' |
| Position angle | 163 ° |
| Surface brightness | 12.5 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 332 |
| Redshift | 0.010097 ± 0.000020 |
| Radial velocity | 3027 ± 6 km / s |
|
Stroke distance v rad / H 0 |
(129 ± 9) · 10 6 ly (39.6 ± 2.8) Mpc |
| history | |
| discovery | Lewis A. Swift |
| Discovery date | February 27, 1898 |
| Catalog names | |
| IC 4197 • ESO 508-013 • MCG -04-31-036 • 2MASX J13080432-2347486 • SGC 130522-2331.8 • HIPASS J1308-23 • LDCE 955 NED005 • WISEA J130804.33-234748.7 | |
IC 4197 is an elliptical galaxy of the Hubble type E / SB0 with an active galaxy core in the constellation Hydra south of the ecliptic . It is an estimated 129 million light years from the Milky Way and about 55,000 light years in diameter . In the same area of the sky are the galaxies NGC 4968 , NGC 4970 , NGC 4993 , IC 4180 , among others .
The object was discovered on February 27, 1898 by the American astronomer Lewis A. Swift .