NGC 173
| Galaxy NGC 173 |
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|---|---|
![NGC 173 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:NGC173_-_SDSS_DR14.jpg)
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| NGC 173 SDSS image | |
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 00 h 37 m 12.47 s |
| declination | + 01 ° 56 ′ 32.1 ″ |
| Appearance | |
| Morphological type | SA (rs) c |
| Brightness (visual) | 12.3 mag |
| Brightness (B-band) | 13.0 likes |
| Angular expansion | 3.2 ′ × 2.6 ′ |
| Position angle | 90 ° |
| Surface brightness | 14.5 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 173 group NGC 192 group LGG 10 |
| Redshift | 0.014563 ± 0.000017 |
| Radial velocity | 4366 ± 5 km / s |
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Stroke distance v rad / H 0 |
(199 ± 14) · 10 6 ly (61.1 ± 4.3) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | December 28, 1790 |
| Catalog names | |
| NGC 173 • UGC 369 • PGC 2223 • CGCG 383-043 • MCG + 00-02-092 • IRAS 00346 + 0140 • 2MASX J00371247 + 0156321 • GC 84 • H III-871 • h 33 • HIPASS J0037 + 01 • LDCE 34 NED002 | |
NGC 173 is a spiral galaxy of Hubble type Sc in the constellation Cetus south of the ecliptic . It is estimated to be 199 million light-years from the Milky Way and about 50,000 light-years across. Together with five other galaxies, it forms the NGC 192 group or LGG 10 .
In the same area of the sky are u. a. the galaxies NGC 164 , NGC 170 , NGC 182 , IC 40 .
The object was discovered on December 28, 1790 by the German-British astronomer Wilhelm Herschel .
Web links
Commons : NGC 173 - collection of images, videos, and audio files
