Wild duck pile
Image taken using the Wide Field Imager of the MPG / ESO 2.2 m telescope | |
AladinLite | |
Constellation | sign |
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]