Skip to main content
July 3, 2012 - 10:33am

Z UMa, known formally as Z Ursae Majoris, is a semi-regular variable located in the upper left of the bowl of the Big Dipper. This star is popular since, due to its +57° declination, it is a circumpolar star for most of the population of the Northern Hemisphere....

AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484