Identifying an artefact

[almcl]

Would some kind soul with minor solar system objects enabled on their planetarium prog, cast their eyes over the image below and help determine if the horizontal artefact (arrowed in green) is genuinely an asteroid/minor planet or similar?

Try as I may, I can't get Stellarium to display anything in that area.

On individual subs it is just a point source but when stacked the line shows up.  If it's an artefact I can deal with it, but if it's genuine feel it should be left there.

[Waddensky]

Not an expert, but (447) Valentine is in the neighbourhood according to Cartes du Ciel.

[vlaiv]

59 minutes ago, almcl said:

On individual subs it is just a point source but when stacked the line shows up.  If it's an artefact I can deal with it, but if it's genuine feel it should be left there.

How much point like?

If it is single pixel then - it is obviously hot pixel, but if it has PSF (blurred star like appearance) then it is probably genuine thing.

[almcl]

Don't think it's a hot pixel, it changes shape over time (blow up from first and last subs):

 

but perhaps more tellingly, it moves between last and first frame while nothing else does:

I'll check out 447 Valentine, thanks!