NGC 252
| Galaxy NGC 252 |
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|---|---|
![NGC 252 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC252_-_SDSS_DR14.jpg)
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| NGC 252 SDSS image | |
| AladinLite | |
| Constellation | Andromeda |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 00 h 48 m 01.500 s |
| declination | + 27 ° 37 ′ 25.10 ″ |
| Appearance | |
| Morphological type | (R) SA (r) 0 + : |
| Brightness (visual) | 12.5 mag |
| Brightness (B-band) | 13.4 mag |
| Angular expansion | 1.5 ′ × 1.2 ′ |
| Position angle | 80 ° |
| Surface brightness | 12.8 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 252 group LGG 12 |
| Redshift | 0.016645 ± 0.000103 |
| Radial velocity | 4990 ± 31 km / s |
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Stroke distance v rad / H 0 |
(227 ± 16) x 10 6 ly (69.7 ± 4.9) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | October 26, 1786 |
| Catalog names | |
| NGC 252 • UGC 491 • PGC 2819 • CGCG 480-007 • MCG + 04-03-004 • IRAS 00453 + 2721 • 2MASX J00480148 + 2737257 • GC 136/139 • H II-609 • h 59/60 • GALEX ASC J004801 .59 + 273726.7 • HOLM 23B • LDCE 74 NED002 | |
NGC 252 is a lenticular galaxy of the Hubble type S0 / a in the constellation Andromeda in the northern sky . It is an estimated 227 million light years from the Milky Way and about 90,000 light years in diameter.
In the same area of the sky there is the galaxy NGC 258 , NGC 260 , IC 1584 .
The type IaP supernova SN 1998de was observed here.
The object was discovered on October 26, 1786 by the German-British astronomer Wilhelm Herschel .
NGC 252 group ( LGG 12 )
| Galaxy | Alternative name | Distance / million Lj |
|---|---|---|
| NGC 252 | PGC 2819 | 227 |
| NGC 260 | PGC 2844 | 240 |
| PGC 2627 | UGC 470 | 239 |
| PGC 2752 | CGCG 500-092 | 237 |
| PGC 2865 | UGC 501 | 234 |
Web links
Commons : NGC 252 - collection of images, videos, and audio files
