IC 1789
| Galaxy IC 1789 |
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|---|---|
![IC 1789 [1]](https://de.wikipedia.org/wiki/Datei:IC1789_-_SDSS_DR14.jpg)
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| IC 1789 | |
| AladinLite | |
| Constellation | triangle |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 02 h 17 m 51.18 s |
| declination | + 32 ° 23 ′ 45.7 ″ |
| Appearance | |
| Morphological type | Sa: |
| Brightness (visual) | 13.8 mag |
| Brightness (B-band) | 14.7 mag |
| Angular expansion | 2.2 ′ × 0.4 ′ |
| Position angle | 27 ° |
| Surface brightness | 13.5 mag / arcmin² |
| Physical data | |
| Affiliation | IC 1784 group LGG 55 |
| Redshift | 0.015991 ± 0.000020 |
| Radial velocity | 4794 ± 6 km / s |
|
Stroke distance v rad / H 0 |
(219 ± 15) x 10 6 ly (67.2 ± 4.7) Mpc |
| history | |
| discovery | Edward E. Barnard |
| Catalog names | |
| IC 1789 • UGC 1763 • PGC 8766 • CGCG 504-049 • MCG + 05-06-024 • IRAS 02149 + 3210 • 2MASX J02175117 + 3223454 • GALEX ASC J021751.10 + 322339.9 • LDCE 157 NED003 • NVSS J021751 + 322352 | |
IC 1789 is a spiral galaxy of the Hubble type Sa in the constellation Triangle in the northern sky . It is around 219 million light years away from the Milky Way and has a diameter of around 140,000 light years. Together with four other galaxies, it forms the IC 1784 group ( LGG 55 ).
In the same area of the sky are u. a. the galaxies IC 1785 and IC 1793 .
The object was discovered by Edward Emerson Barnard .