Wild duck pile
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| Image taken using the Wide Field Imager of the MPG / ESO 2.2 m telescope | |
| AladinLite | |
| Constellation | sign |
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Position equinox : J2000.0 |
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| Right ascension | 18 h 51 m 05 s |
| declination | −06 ° 16 ′ 12 ″ |
| Appearance
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| classification | II, 2, r (Trumpler), g (Shapley) |
| Brightness (visual) | 5.8 likes |
| Brightness (B-band) | 6.32 mag |
| Angular expansion | 14.0 ′ |
| Number of stars | 2900 |
| Physical data
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| Redshift | 98 · 10 −6 |
| Radial velocity | 29.49 km / s |
| distance | 6000 ly (1800 pc ) |
| Age | 250 million years |
| history | |
| Discovered by | Gottfried Kirch |
| Discovery time | 1681 |
| Catalog names | |
| M 11 • NGC 6705 • C 1848-063 • OCl 76 • Mel 213 • Cr 391 • Lund 865 • | |
The Wild Duck Cluster (also known as Messier 11 or NGC 6705 ) is a 5.8 mag bright open star cluster with an angular extent of 14 ′ in the constellation Schild .
It was discovered by Gottfried Kirch in 1681 and added to his list by Charles Messier in 1764 . It is one of the most compact of the open star clusters and can be found with binoculars on the northern edge of a large star cloud in the Milky Way .
Web links
Commons : Messier 11 - album with pictures, videos and audio files
- Messier 11 at SEDS
- Spektrum.de : Amateur recordings [1] [2]
