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YY Tau: call for observations

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Eric Dose
Eric Dose's picture
YY Tau: call for observations

Mira YY Tau is approaching minimum but has become fainter than I can reliably observe with my 14" OTA and CCD. You can make a very timely contribution by fitting in even a couple of observation points over the next 4-6 weeks.

The VSX ephemeris dates from 1926, giving a period of 192.1 days which seems wrong--I'm seeing a current period about twice that length. You may judge for yourself:

YY Tau on LCG: https://www.aavso.org/lcg/plot?auid=000-BBJ-382&starname=YY%20TAU&lastda...

YY Tau:    05:28:38  +15:40:55   (J2000) //  V max ~ 11.5   V min ~ 18(??)

Thanks for whatever you can do!

Eric Dose, Albuquerque New Mexico

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