The Collinder catalogue is a catalogue of 471
open clusters compiled by Swedish astronomer
Per Collinder. It was published in 1931 as an appendix to Collinder's paper On structural properties of open galactic clusters and their spatial distribution.[1]
Cr 334 and 335 are duplicate listings of the same object.
The original alias given for Cr 339 is the galaxy NGC 6393. The correct alias for Cr 339 is the open cluster NGC 6396.
The original alias given for Cr 371 is of the nebula which surrounds an open cluster he discovered. He apparently did not know he was first to make the distinction.
Cr 374 is embedded within the much larger
Messier 24.
Collinder erroneously believed that
Messier 11 was a globular cluster.
Collinder’s description of
Messier 73 is actually for
Messier 72, a globular cluster, and not the object he intended for, Cr. 426.
Melotte catalogue - a similar catalogue of star clusters published by Philibert Jacques Melotte in 1915.
Trumpler catalogue - a similar catalogue of open star clusters published by Robert Julius Trumpler in 1930, one year before Per Collinder.
References
^Collinder, Per (1931). "On Structural Properties of Open Galactic Clusters and their Spatial Distribution. Catalog of Open Galactic Clusters". Annals of the Observatory of Lund. 2: B1–B46.
Bibcode:
1931AnLun...2....1C.