e. See also VHK for the V*. in source:M 33 = NGC 598 Ref:=1926ApJ....63..236H byHUBBLE E.P. Astrophys. J., 63, 236-274 (1926) A spiral nebula as a stellar system: Messier 33. o[H26] acronym is not used for the V*, the numbering is continued in 1975ApJS...29..303V, all V* are 'VHK NN' in SIMBAD. o<VHK NN> (Nos 1-45). <[H26] AN> (Nos N1, N2).
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