NGC 6871
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| AladinLite | |
| Constellation | swan |
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Position equinox : J2000.0 |
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|---|---|
| Right ascension | 20 h 05 m 59.4 s |
| declination | + 35 ° 46 ′ 38 ″ |
| Appearance
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| classification | IV3p |
| Brightness (visual) | 5.2 likes |
| Brightness (B-band) | 5.43 mag |
| Angular expansion | 30.0 ' |
| Number of stars | <50 |
| Physical data
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| Affiliation | Milky Way |
| Redshift | −0.000035 |
| distance | 5150 ly (1585 pc ) |
| Age | 9 million years |
| history | |
| Discovered by | William Herschel |
| Discovery time | September 23, 1783 |
| Catalog names | |
| NGC 6871 • C 2004 + 356 • OCl 148 • Cr 413 • h 2067, GC 4548 | |
NGC 6871 is an open cluster of Trumpler type IV3p in the constellation Cygnus the northern sky . It has a diameter of 30 arc minutes and an apparent magnitude of 5.2 mag. The cluster is about 5,000 light years from the solar system and is estimated to be 9 million years old.
The object was discovered by William Herschel in 1783 .
Individual evidence
- ↑ NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ a b c SEDS : NGC 6871
- ↑ AL Tadross: A catalog of 120 NGC open star cluster . In: Journal of the Korean Astronomical Society , 44, 2011, pp. 1-11. doi: 10.5303 / JKAS.2011.44.1.1 .
- ↑ Seligman
- ↑ SIMBAD Database