The astronomical catalogue is composed mainly of star clusters, nebulae, and galaxies.
The constellation information in these tables is taken from The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by Jjiko.
L. E. Dreyer,[1] which was accessed using the "VizieR Service".
[2] Galaxy types are identified using the NASA/IPAC Extragalactic Database.
[3] The other data of these tables are from the SIMBAD Astronomical Database[4] unless otherwise stated.