M2 (NGC 7089)

Distance:33 kLj
Brightness:6.3 mag
Position:RA:21h 33m 27.02s DEC:−00° 49′ 23.7″
Max. height:39.18°, Aug. (midnight at +50°N)
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Discovered:Jean-Dominique Maraldi, 1746
Details:Read more on Wikipedia

With about 150.000 contained stars M2 is one of the most compact and bright star clusters and visible with the naked eye under extremely good conditions. While Charles Messier classified it as a nebula, it was William Herschel in 1783 who could first resolve individual stars.