NGC 4457
| Galaxy NGC 4457 |
|
|---|---|
|
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| SDSS recording | |
| AladinLite | |
| Constellation | Virgin |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 28 m 59.0 s |
| declination | + 03 ° 34 ′ 14 ″ |
| Appearance | |
| Morphological type | (R) SAB (s) 0 / a / LINER |
| Brightness (visual) | 10.8 mag |
| Brightness (B-band) | 11.7 mag |
| Angular expansion | 2.6 '× 2.3' |
| Position angle | 66 ° |
| Surface brightness | 12.6 mag / arcmin² |
| Physical data | |
| Affiliation | Virgo cluster |
| Redshift | 0.002942 ± 0.000020 |
| Radial velocity | 882 ± 6 km / s |
|
Stroke distance v rad / H 0 |
(36 ± 3) x 10 6 ly (11.0 ± 0.8) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | February 23, 1784 |
| Catalog names | |
| NGC 4457 • UGC 7609 • PGC 41101 • CGCG 042-124 • MCG + 01-32-075 • IRAS 12264 + 0350 • 2MASX J12285901 + 0334141 • VCC 1145 • GC 3009 • H II 35 • h 1286 • LEDA 41101 • LDCE 0904 NED137 | |
NGC 4457 is a lenticular galaxy with an active nucleus of the Hubble type SB0 / a in the constellation Virgo on the ecliptic . It is an estimated 36 million light years away from the Milky Way and has a diameter of about 30,000 ly. It is listed as a member of the Virgo Galaxy Cluster under catalog number VCC 1145 .
In the same area of the sky is u. a. the galaxy NGC 4412 , NGC 4480 , NGC 4496 , NGC 4505 .
The object was discovered by Wilhelm Herschel on February 23, 1784 .
On July 1, 2020 was supernova of type Ia discovered in the galaxy that the designation SN received 2020nvb. With a visual brightness of 13.1 mag on July 1, 2020, it is relatively bright. However, since it is only 9 arc seconds away from the active core of the galaxy, it can only be photographed using a telescope.
