JSO Explanations and Definitions

Distance Abbreviations
LY: Light Year
MLY: Thousand Light Years
MMLY: Million Light Years

Object Catalogues by Object Type

Galaxies

General

B#: Berkeley Open cluster

UGC#: Upsala General Catalogue of Galaxies

UGC#: Upsala General Catalogue of Galaxies

University of California at Berkeley investigations of POSS I plates for often extremely faint and rich open star clusters. 90 known.

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