[vsnet-chat 7553] Re: variable in OTJ16... field?

[Michael Richmond]

I've been monitoring SDSS J162520+120309 for the past week, and
I noticed the variation in the light of this star:

   GSC 0096700904 = USNOB1.0 1020-0302581

I was contacted by Enrique de Miguel Agustino, who also independently
noticed the variation in this star's brightness.  He put our from several
nights together and found a period of about 0.4091(23) days, but he's
still working on it.

I use ensemble photometry, with 30 or 40 comparison stars from the
entire field, and I check carefully to make sure that none of the 
comparisons have strong variation.

You can see some pictures of the light curves of this star by looking
at some of my reports:

http://spiff.rit.edu/richmond/ritobs/jul07_2010/jul07_2010.html
http://spiff.rit.edu/richmond/ritobs/jul11_2010/jul11_2010.html

Please contact Enrique if you'd like to give your measurements 
to him -- I think he may be planning to put together some sort of
comprehensive analysis.  If you wish to contact him, send me 
E-mail privately and I'll reply with his contact info.

              Michael Richmond