NGC 6866
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| AladinLite | |
| Constellation | swan |
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Position equinox : J2000.0 |
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|---|---|
| Right ascension | 20 h 03 m 55.2 s |
| declination | + 44 ° 09 ′ 33 ″ |
| Appearance
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| classification | II2m |
| Brightness (visual) | 7.6 likes |
| Brightness (B-band) | 8.0 likes |
| Angular expansion | 7.0 ' |
| Physical data
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| Affiliation | Milky Way |
| distance | 4700 ly (1450 pc ) |
| Age | 800 million years |
| history | |
| Discovered by | Caroline Herschel |
| Discovery time | July 23, 1783 |
| Catalog names | |
| NGC 6866 • C 2002 + 438 • OCl 183 • Mel 229 • Cr 412 • GC 4544 • H VII 59 • h 2066 • | |
NGC 6866 is an Open Cluster Trumpler-Type II2m in the constellation Swan in the northern sky . It has a brightness of 7.6 mag and an area of 7.0 '× 7.0'. The cluster is around 4,700 light years from the solar system and is estimated to be 800 million years old.
The object was discovered on July 23, 1783 by Caroline Herschel .