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Z UMi fading again

roe's picture
Joined: 2010-07-25

The RCB star Z UMi is fading again after recovering from its most recent deep fade.  Interestingly, Z UMi did not recover to its historical high value before this fade began, missing it by some 2 magnitudes.   From the light curve it appears that the 'normal' high value is trending downward.  Could it be that Z UMi is going into a very prolonged fade similar to that of R CrB itself which has been in a low state for some 6 or 7 years?

Jim Roe [ROE]

Z Umi fading again
SYO's picture
Joined: 2011-09-15

Observed it last week at 14.9. Hoping to catch one more glimpse tonight (if it will ever clear up!) before it fades below the range of my 15 inch.


Timothy Steck (SYO)

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