Collinder 70
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|
| AladinLite | |
| Constellation | Orion |
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Position equinox : J2000.0 |
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|---|---|
| Right ascension | 05 h 36 m |
| declination | -01 ° 00 ′ |
| Appearance
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|
| classification | III 3 rn |
| Brightness (visual) | +0.4 mag |
| Angular expansion | 150 ' |
| Number of stars | approx. 130 |
| Brightest star | Alnilam , +1.7 mag |
| Redness ( excess color E (BV)) | 0.04 |
| Physical data
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| Affiliation | Orion OB1 Association, Orion Molecular Cloud Complex, Milky Way |
| Radial velocity | (19.5 ± 2.2) km / s |
| distance | approx. 1300 ly |
| Age | approx. 5 million years |
| history | |
| Catalog names | |
| C 0533-011 • OCl 503 • Cr 70 • Lund 186 • | |
Collinder 70 is an open star cluster in the constellation Orion and is 800–900 light years away. Already freiäugig are about 8 to see up to 15 stars. At around 3 ° it is one of the largest star clusters and was included in the catalog named after him by Per Collinder . It contains the three belt stars of the constellation Orion and another 130 stars, most of which are brighter than 10 mag .
Among all the open star clusters in the night sky, Collinder 70 is the brightest in terms of integrated brightness (0.4 mag).
Individual evidence
- ↑ astro.goblack.de: Alnilam , accessed on October 8, 2017
- ↑ http://www.backyard-astro.com/deepsky/bino/02_b.html