NGC 550
| Galaxy NGC 550 |
|
|---|---|
|
|
| SDSS recording | |
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 01 h 26 m 42.5 s |
| declination | + 02 ° 01 ′ 20 ″ |
| Appearance | |
| Morphological type | SB (s) a? |
| Brightness (visual) | 12.7 mag |
| Brightness (B-band) | 13.6 mag |
| Angular expansion | 1.4 ′ × 0.6 ′ |
| Position angle | 120 ° |
| Surface brightness | 12.4 mag / arcmin² |
| Physical data | |
| Redshift | 0.019443 ± 0.000080 |
| Radial velocity | 5829 ± 24 km / s |
|
Stroke distance v rad / H 0 |
(263 ± 19) x 10 6 ly (80.7 ± 5.7) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | October 8, 1785 |
| Catalog names | |
| NGC 550 • UGC 1021 • PGC 5374 • CGCG 385-139 • MCG + 00-04-146 • 2MASX J01264255 + 0201205 • GC 326 • H II 463 • h 122 • GALEX ASC J012642.47 + 020120.5 • LDCE 87 NED005 | |
NGC 550 is a spiral galaxy of Hubble type Sa in the constellation Cetus south of the ecliptic . It is an estimated 263 million light years from the Milky Way and about 110,000 light years in diameter.
In the same area of the sky are u. a. the galaxies NGC 533 , IC 103 , IC 105 , IC 109 .
The supernova SN 1961Q was observed here.
The object was discovered on October 8, 1785 by the German-British astronomer Wilhelm Herschel .
Web links
Commons : NGC 550 - collection of images, videos, and audio files
