IC 731
| Galaxy IC 731 |
|
|---|---|
![IC 731 [1] SDSS image](https://de.wikipedia.org/wiki/Datei:IC731_-_SDSS_DR14.jpg)
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| IC 731 SDSS recording | |
| AladinLite | |
| Constellation | Big Bear |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 11 h 45 m 18.084 s |
| declination | + 49 ° 34 ′ 13.52 ″ |
| Appearance | |
| Morphological type | Sc: |
| Brightness (visual) | 15.1 mag |
| Brightness (B-band) | 15.9 mag |
| Angular expansion | 0.50 ′ × 0.3 ′ |
| Position angle | 80 ° |
| Surface brightness | 12.9 mag / arcmin² |
| Physical data | |
| Redshift | 0.023526 ± 0.000052 |
| Radial velocity | 7053 ± 16 km / s |
|
Stroke distance v rad / H 0 |
(318 ± 22) · 10 6 ly (97.4 ± 6.8) Mpc |
| history | |
| discovery | Lewis Swift |
| Discovery date | May 11, 1890 |
| Catalog names | |
| IC 731 • PGC 36626 • CGCG 242-079 • MCG + 08-21-096 • 2MASX J11451810 + 4934130 • GALEX ASC J114518.15 + 493415.1 • NSA 038462 • WISEA J114518.07 + 493413.7 | |
IC 731 is a spiral galaxy of Hubble type Sc in the constellation Ursa Major. It is an estimated 318 million light years away from the Milky Way and about 45,000 light years in diameter.
In the same area of the sky is u. a. the galaxy NGC 3870 .
The object was discovered by Lewis Swift on May 11, 1890 .