NGC 4646 (other designations - UGC 7892 , MCG 9-21-31 , ZWG 270.15 , PGC 42740 ) is a lenticular galaxy ( S0 ) in the constellation Ursa Major .
| NGC 4646 | |
|---|---|
| Galaxy | |
| Research history | |
| Discoverer | William Herschel |
| opening date | March 24, 1791 |
| Designations | NGC 4646 , UGC 7892 , MCG 9-21-31 , ZWG 270.15 , PGC 42740 |
| Observational data ( Age J2000.0 ) | |
| Constellation | Big Dipper |
| Right ascension | 12 h 42 m 52.1 s |
| Declination | + 54 ° 51 ′ 24 ″ |
| Visible dimensions | 1.0 '× 0.8' |
| Apparent magnitude m V | 13,4 |
| Photographic magnitude m B | 14,4 |
| Characteristics | |
| Type of | S0 |
| Included in | , and |
| Radial velocity | |
| Redshift | +0.015324 ± 0.000127 |
| Distance | |
| Angular position | 12 ° |
| Surface brightness | 13.0 |
| Database Information | |
| SIMBAD | |
This object is one of those listed in the original edition of the New General Catalog .
See also
- List of Messier objects
- New shared directory
Links
- Information in English and French from the original “ New General Catalog ”
- Information (Eng.) From the Revised New General Catalog
- VizieR (English)
- NASA / IPAC Extragalactic Database
- NGC 4646 Publication List
- ↑ 1 2 3 SIMBAD Astronomical Database
- ↑ Gültekin K. , Remco CE van den Bosch , Gebhardt K. Hunting for supermassive black holes in nearby galaxies with the Hobby-Eberly telescope // The Astrophysical Journal : Supplement Series - 2015 .-- T. 218, no. 1. - P. 10. - ISSN 0067-0049 ; 1538-4365 - doi: 10.1088 / 0067-0049 / 218/1/10
- ↑ Masters K. L. Groups of Galaxies in the Two Micron All Sky Redshift Survey // The Astrophysical Journal Letters - IOP Publishing , 2007 .-- Vol. 655, Iss. 2. - P. 790–813. - ISSN 2041-8205 ; 2041-8213 - doi: 10.1086 / 510201 - arXiv: astro-ph / 0610732