NGC 7171
| Galaxy NGC 7171 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Aquarius |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 22 h 01 m 02.0 s |
| declination | -13 ° 16 ′ 11 ″ |
| Appearance | |
| Morphological type | SB (rs) b / HII |
| Brightness (visual) | 12.2 mag |
| Brightness (B-band) | 12.9 mag |
| Angular expansion | 2.6 'x 1.5' |
| Position angle | 125 ° |
| Surface brightness | 13.5 mag / arcmin² |
| Physical data | |
| Redshift | 0.009069 ± 0.000019 |
| Radial velocity | 2719 ± 6 km / s |
|
Stroke distance v rad / H 0 |
(126 ± 9) · 10 6 ly (38.7 ± 2.7) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | August 12, 1787 |
| Catalog names | |
| NGC 7171 • PGC 67839 • MCG -02-56-005 • IRAS 21583-1330 • 2MASX J22010200-1316108 • GC 4728 • H III 692 • h 2138 • HIPASS J2200-13 | |
NGC 7171 is a barred spiral galaxy with extensive star formation from Hubble type SBb in the constellation Aquarius on the ecliptic . It is estimated to be 126 million light years from the Milky Way and about 95,000 light years in diameter.
In the same area of the sky is u. a. the galaxy IC 1417 .
The object was discovered by Wilhelm Herschel on August 12, 1787 .