Harold Corwin

This cluster is scattered and rather ill-defined. The brighter stars to the northeast were taken by Andris Lauberts to place the center of the cluster, and indeed John Herschel's mean position seems to agree with that. However, John Herschel's descriptions on two nights make the cluster at least as large as his 15-arcminute field, and -- on the second night -- considerably larger ("More than fills field"). This suggests that John Herschel also included the stars to the southwest in his object. The position I've adopted for the cluster reflects that supposition. Whether it's right or not can be answered by a detailed photometric, spectroscopic, and astrometric study.

Also see NGC 6421 where this may play a role in the identification of that star cloud.

― NGC Notes by Harold Corwin

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