[Aavso-photometry] variable comp star in field of TT Ari?

[Sebastian Otero]

> Looks like BD+14 339 = TYC 1207-1550-1 is variable indeed.  Is it 111 
> comp?
>
> Coordinates (J2000.0): 02 06 19.092 +15 03 40.66 (16.2' away from TT Ari)
> Tycho mags are B=11.0, V=10.6
> NSVS 9251826 is within 1" (2:6:19.08 15:3:41.47):
> <http://skydot.lanl.gov/nsvs/star.php?num=9251826&mask=32004>
> ROTSE range of variability is 10.58-10.76 with individual errors as low as
> 0.01m.  The ratio of Mag Scatter vs Median Error parameters 
> (0.032/0.01=3.2)
> indicates the significant variability.


But this is NSV 15440.
The 111 comp star is GSC 1207-1562 at 02h 06m 38.07s +15° 19' 59.5" 
(J2000.0) and it is not variable in ROTSE-1 data:
http://skydot.lanl.gov/nsvs/star.php?num=9251988&mask=18708

ASAS-3 data also suggest constancy at the 0.1 mag. level although there are 
some datapoints in the range 10.9-10.95 (around JD 2453750) instead of the 
normal 11.0-11.05
http://www.astrouw.edu.pl/cgi-asas/asas_plot_raw?020638+1520.0,asas3,0,400,850
Nothing conclusive.
>From the above the star looks constant but at J-K 0.83 maybe is is a late K 
dwarf with some kind of sporadic flare/activity.

More observations are needed but survey data don't suggest variability.

Cheers,
Sebastian.