What object is in this photo?
View coordinates: $47.25103 \ \ 38.81697$
Time: $2013$-$11$-$23 ~21$:$00 +4 ~UTC$
Sony $A580, \ 50mm f/1.4 15"$
Your guess was correct. It is the Andromeda Galaxy, M31.
Here is a map of the part of the sky near zenith at the place and time you provided: Sky map for Taganrog, Russia on 11/23/2013 5:00:00 PM UTC. Even the rotation is small. The sky map is rotated approximately 30° counter clockwise relative to the photo. You were approximately facing south when taking it.
On your picture there is a part of the Andromeda constellation. I will use only a small bottom part of your picture (below the imaginary horizontal line going through M31) to identify the constellation.
37 μ Andon the sky map). It is the star between Mirach (out of photo) and M31.
16 λ Andand connected with μ on the sky map).
The bottom of the three stars in the upper-left corner of your photo is φ Andromedae (connected by the vertical line with
37 μ And on the sky map).
1 ο And on the sky map is not on your photo.