The Wild Duck Cluster (also known as Messier 11, or NGC 6705) is an w:open cluster in the w:constellation w:Scutum. It was discovered by w:Gottfried Kirch in 1681. w:Charles Messier included it in his catalogue in 1764.
|Wild Duck Cluster|
The Wild Duck Cluster (M11-NGC 6705)
|Observation data (J2000.0 epoch)|
|Right ascension||18h 51.1m|
|Distance||6,200 ly (1,900 pc)|
|Apparent magnitude (V)||6.3|
|Apparent dimensions (V)||14.0′|
|Other designations||Messier 11, NGC 6705|
The Wild Duck Cluster is one of the richest and most compact of the known open clusters, containing about 2900 w:stars. Its age has been estimated to about 220 million years. Its name derives from the brighter stars forming a triangle which could represent a flying flock of w:ducks.