NGC 5820
| Galaxy NGC 5820 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | Bear keeper |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 14 h 58 m 39.8 s |
| declination | + 53 ° 53 ′ 10 ″ |
| Appearance | |
| Morphological type | S0 |
| Brightness (visual) | 12.3 mag |
| Brightness (B-band) | 13.3 mag |
| Angular expansion | 1.3 ′ × 1.1 ′ |
| Position angle | 87 ° |
| Surface brightness | 15.1 mag / arcmin² |
| Physical data | |
| Redshift | 0.011124 ± 0.000030 |
| Radial velocity | (3335 ± 9) km / s |
|
Stroke distance v rad / H 0 |
(155 ± 11) · 10 6 ly (47.6 ± 3.3) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | May 5, 1788 |
| Catalog names | |
| NGC 5820 • UGC 9642 • PGC 53511 • CGCG 273-038, 274-004 • MCG + 09-25-001 • 2MASX J14583982 + 5353100 • GC 4029, 4025 • H II 756 • h 1898 • LDCE 1103 NED001 | |
NGC 5820 = Arp 136 is a 12.3 mag bright, lens-shaped galaxy of the Hubble-type S0 in the constellation Bear Guardian . It is estimated to be 155 million light years from the Milky Way and about 75,000 ly in diameter. It may interact with NGC 5821 .
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class of elliptical galaxies with nearby fragments (Arp catalog) .
The object was discovered on May 5, 1788 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as "pB, pL, iF, resolvable".
Web links
- NGC 5820. SIMBAD, accessed April 26, 2016 .
- NGC 5820. DSO Browser, accessed April 26, 2016 .
- 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