The constellation information in these tables is taken from The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer,[1] which was accessed using the "VizieR Service".[2] Galaxy morphological types and objects that are members of the Large Magellanic Cloud are identified using the NASA/IPAC Extragalactic Database.[3] The other data of these tables are from Wolfgang Steinicke's Revised New General Catalogue and Index Catalogue[4] and/or the SIMBAD Astronomical Database[5] unless otherwise stated.
^ abcde
R. W. Sinnott, ed. (1988). The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer. Sky Publishing Corporation and Cambridge University Press. ISBN978-0-933346-51-2.
^"VizieR Service". Strasbourg astronomical Data Center. Retrieved 18 August 2015.
^"NED". NED–NASA/IPAC Extragalactic Database. Retrieved 18 August 2015.
^G. de Vaucouleurs; A. de Vaucouleurs; H. G. Corwin; R. J. Buta; G. Paturel; P. Fouque (1991). Third Reference Catalogue of Bright Galaxies. New York: Springer-Verlag.