Dictionary of Nomenclature of Celestial Objects

 association yy = 0
zz : If zz not given, then zz is assumed to be the same as |yy| See also NBG: NBG galaxies are members of 36 clouds, 254 associations and 336 groups of two or more members. Auth.:TULLY R.B.+ Auth.:TULLY R.B. Ref:=1987ApJ...321..280T byTULLY R.B. Astrophys. J., 321, 280-304 (1987) Nearby groups of galaxies. II. An all-sky survey within 3000 kilometers per second. oTable 2: <NBGG xx+yy +zz> N=340 =E=Catalogue in electronic form as VII/145
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