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This study sums up a major part of the red giant V449 Cygni measurements forthe years 1974 through 2022, obtained by visual and CCD GEOS observers, theUnione Astrofili Italiani, and various automatized telescopes. It appears thatthe light variations of V449 Cyg in the years 1970-1990 corresponded more to anL-type star according to the GCVS classification, with irregular amplitudevariations, sometimes marked by a quasi-periodicity of about 100 days. Sincethe mid-1990s, these variations have become more regular, with an amplitude ofabout 0.7 magnitude in V, and a period of about 54,1 days, as shown by variousperiod search routines applied to the best recent CCD series. A longer periodof about 2000 days is possible to describe the long term variation of V449 Cyg.Therefore, V449 Cyg appears to be an SRB-type star.

Photometric survey of the red giant V449 Cygni over half a century (1974 to 2022). A semi-regular variable star with a period of ~54 days