NGC 6121

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NGC 6121[1][2], also known as M 4, is a globular cluster located in the constellation Scorpius.

NGC 6121
Observation data: 2000.0 epoch
Constellation Scorpius
Right ascension 16h23.6m
Declination -26o32'
Type Globular cluster
Apparent dimensions 26.3
Apparent magnitude 5.9
Other designations M 4



Scientific research


  1. Hirshfeld, Alan, and Roger W. Sinnott, eds., Sky Catalogue 2000.0, Vol.2, Cambridge, Massachusetts: Sky Publishing Corp. and Cambridge University Press, 1985. (3098,238)
  2. NGC 2000.0, The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J.L.E. Dreyer Sinnott, R.W. (edited by) <Sky Publishing Corporation and Cambridge University Press (1988)>