NGC 3788
| Galaxy NGC 3788 |
|
|---|---|
|
|
| NGC 3788 & NGC 3786 ( SDSS recording) | |
| AladinLite | |
| Constellation | Big Bear |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 11 h 39 m 44.6 s |
| declination | + 31 ° 55 ′ 52 ″ |
| Appearance | |
| Morphological type | SAB (rs) ab / pec |
| Brightness (visual) | 12.6 mag |
| Brightness (B-band) | 13.4 mag |
| Angular expansion | 2.1 ′ × 0.7 ′ |
| Position angle | 178 ° |
| Surface brightness | 12.9 mag / arcmin² |
| Physical data | |
| Affiliation |
LGG 243 WBL 345 NGC 3672 group |
| Redshift | 0.009003 ± 0.000020 |
| Radial velocity | 2699 ± 6 km / s |
|
Stroke distance v rad / H 0 |
(120 ± 8) x 10 6 ly (36.9 ± 2.6) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | April 29, 1827 |
| Catalog names | |
| NGC 3788 • UGC 6623 • PGC 36160 • CGCG 157-010 • MCG + 05-28-009 • KUG 1137 + 321 • 2MASX J11394459 + 3155526 • Arp 294 • VV 228 • NVSS J113944 + 315556 • LDCE 0825 NED004 • KPG 295B • HOLM 272A | |
NGC 3788 is a barred spiral galaxy of the Hubble type SBab / P in the constellation Great Bear in the northern sky . It is estimated to be 120 million light years away from the Milky Way and about 75,000 light years in diameter. Together with NGC 3786 , it forms the interacting galaxy pair Arp 294 , KPG 295 or Holm 272 . Together with three other galaxies, it forms the NGC 3788 group or LGG 243 .
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This pair of galaxies belongs to the class of galaxies with long filaments .
In the same area of the sky are u. a. the galaxies IC 2946 and IC 2947 .
The object was discovered on April 29, 1827 by the British astronomer John Herschel .
NGC 3788 group ( LGG 243 )
| Galaxy | Alternative name | Distance / million Lj |
|---|---|---|
| NGC 3788 | PGC 36160 | 120 |
| NGC 3786 | PGC 36158 | 119 |
| PGC 35783 | 120 | |
| PGC 35707 | UGC 6545 | 117 |
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