IC 1781
| Galaxy IC 1781 |
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|---|---|
![IC 1781 with LEDA 1141900 [1] (ro)](https://de.wikipedia.org/wiki/Datei:IC1781_-_SDSS_DR14.jpg)
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| IC 1781 with LEDA 1141900 (ro) | |
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 02 h 06 m 52.8 s |
| declination | -00 ° 31 ′ 05 ″ |
| Appearance | |
| Morphological type | S / HII |
| Brightness (visual) | 14.5 mag |
| Brightness (B-band) | 15.3 mag |
| Angular expansion | 0.40 'x 0.4' |
| Surface brightness | 12.4 mag / arcmin² |
| Physical data | |
| Redshift | 0.043393 ± 0.000055 |
| Radial velocity | 13.009 ± 16 km / s |
|
Stroke distance v rad / H 0 |
(583 ± 41) · 10 6 Lj (178.6 ± 12.5) Mpc |
| history | |
| discovery | Stephane Javelle |
| Discovery date | November 20, 1903 |
| Catalog names | |
| IC 1781 • PGC 8067 • CGCG 387-037 • KUG 0204-007 • 2MASX J02065277-0031053 • GALEX MSC J020652.78-003103.7 • LEDA 8067 | |
IC 1781 is a spiral galaxy with extensive star formation regions of the Hubble type S in the constellation Whale south of the celestial equator . It is around 583 million light years away from the Milky Way and has a diameter of around 70,000 ly.
The galaxy IC 204 is located in the same area of the sky .
The object was discovered by Stéphane Javelle on November 20, 1903 .