The records of the American Association of Variable Star Observers (AAVSO) show a maximum brightness of 0.2 in 1933 and 1942, and a minimum of 1.2, observed in 1927 and 1941.
AAVSO (American Association of Variable Star Observers) poukazuje na maximální jas 0,2 v letech 1933 a 1942, minimální velikost pod 1,2 v letech 1927 a 1941.