NGC 3187
| Galaxy NGC 3187 |
|
|---|---|
|
|
| NGC 3187 (bottom right) together with NGC 3190 (bottom left) and NGC 3193 (top left) recorded with the 81 cm reflecting telescope of the Mount Lemmon Observatory | |
| AladinLite | |
| Constellation | lion |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 10 h 17 m 47.8 s |
| declination | + 21 ° 52 ′ 24 ″ |
| Appearance | |
| Morphological type | SB (s) c pec / HII |
| Brightness (visual) | 12.9 mag |
| Brightness (B-band) | 13.6 mag |
| Angular expansion | 3.6 ′ × 1.6 ′ |
| Position angle | 57 ° |
| Surface brightness | 14.7 mag / arcmin² |
| Physical data | |
| Affiliation | NGC-3190 group, LGG 194 |
| Redshift | 0.005274 ± 0.000010 |
| Radial velocity | (1581 ± 3) km / s |
|
Stroke distance v rad / H 0 |
(68 ± 5) x 10 6 ly (20.7 ± 1.4) Mpc |
| history | |
| discovery | George Johnstone Stoney |
| Discovery date | January 1850 |
| Catalog names | |
| NGC 3187 • UGC 5556 • PGC 30068 • CGCG 123-36 • MCG + 04-24-025 • IRAS 10150 + 2207 • 2MASX J10174784 + 2152238 • HCG 44D • VV 307b • GC 2055 • HCG 44D • HIPASS J1017 + 21; • Part of Arp 316 | |
NGC 3187 is an interacting bar spiral galaxy in the constellation Leo with an apparent magnitude of 12.9 mag and an angular extent of 3.6 '× 1.6'. It is around 68 million light years away from the Milky Way and has a comparatively low surface brightness , so it is one of the LSB galaxies . The galaxy belongs together with NGC 3185 , NGC 3190 and NGC 3193 to the compact galaxy group Hickson 44 (HCG 44, Arp 316 (without NGC 3185), NGC 3190 group). Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy triplet belongs to the class of galaxy groups .
The compact galaxy group HCG 44 recorded by GALEX ; NGC 3187 is the galaxy with the two pronounced arms to the right above the center of the image.
Web links
- Spektrum.de : Amateur recordings [1]
- Arp Atlas of Peculiar Galaxies
- Seligman Arp
literature
- Jeff Kanipe and Dennis Webb: The Arp Atlas of Peculiar Galaxies - A Chronicle and Observer's Guide , Richmond 2006, ISBN 978-0-943396-76-7