Basically, if you dig around the noise of these images you'll always find a set of points that is a match to any orbit you desire.
This is why closely spaced observations over a couple of successive nights showing consistent motion would be needed to gain confidence that the object exists. For something near the detection limits of the scope you would need 5-6 observations over say a period of a week before anyone (i.e CBAT) took any interest.
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