NGC 197
| Galaxy NGC 197 |
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|---|---|
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| Image of the Hubble Space Telescope from NGC 196 (top), 197 (middle) and 192 (bottom) | |
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 00 h 39 m 18.8 s |
| declination | + 00 ° 53 ′ 31 ″ |
| Appearance | |
| Morphological type | SB0 ^ 0 ^ / pec |
| Brightness (visual) | 13.7 mag |
| Brightness (B-band) | 14.7 mag |
| Angular expansion | 0.7 ′ × 0.7 ′ |
| Surface brightness | 12.8 mag / arcmin² |
| Physical data | |
| Affiliation | HCG 7, LGG 10 |
| Redshift | 0.013746 ± 0.000059 |
| Radial velocity | 4121 ± 18 km / s |
|
Stroke distance v rad / H 0 |
(188 ± 13) x 10 6 ly (57.7 ± 4.0) Mpc |
| history | |
| discovery | Albert Marth |
| Discovery date | October 16, 1863 |
| Catalog names | |
| NGC 197 • UGC 406 • PGC 2365 • CGCG 383-053 • MCG + 00-02-107 • 2MASX J00391879 + 0053308 • HCG 7D • GC 5111 • NPM1G +00.0016 | |
NGC 197 is a lenticular galaxy of Hubble type SB0 in the constellation whale on the celestial equator , the 188 million estimated light years from the Milky Way 's center. Together with NGC 192 , NGC 196 and NGC 201 it forms the Hickson compact group HCG 7.
The object was discovered on October 16, 1863 by the German astronomer Albert Marth .
Web links
Commons : NGC 197 - collection of images, videos, and audio files
