Variable star in field of SDSSJ162520.29+120308.7?

During observing session of star in subj close companion showed some light variations. The star is: GSC=0096700904. There are two period candidates (using Peranso): 0.169d and 0.406d.

Periodoigram using all available data from 30s exposures.

Periodoigram from combined frames (3min exposure).

Suspected variable star is marked by cross.

First run.

Second run.