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AAVSO Special Notice #227

Unusual Behavior of FS Aur - Outburst Imminent?

January 3, 2011: The campaign to monitor activity of the peculiar cataclysmic variable FS Aurigae, as announced in AAVSO Alert Notice 428 (see also AAVSO Special Notice #226), continues. Principal Investigator Dr. Vitaly Neustroev reports that the campaign is going well, and that he is very appreciative of your observing efforts and contributions.

A new outburst of FS Aur is expected in the next few nights, and may be imminent. Currently the star is brightening very slowly - although not in outburst and unlike in its previous outbursts - and Dr. Neustroev is very interested in this behavior. Time series observations are strongly encouraged; any and all filters may be used including clear, but V filter is preferred. Please continue to follow FS Aur throughout outburst until it returns to quiesence.

FS Aur is located at the following (J2000) coordinates: RA: 05 47 48.32 , Dec: +28 35 11.6

Charts for FS Aur may be plotted using VSP: http://www.aavso.org/vsp

Please promptly submit all observations to the AAVSO International Database using the name "FS AUR".

Many thanks, and good observing!

This AAVSO Special Notice was prepared by Elizabeth O. Waagen.

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