Hello Peter,

I don't think both of them are real.

2020-03-08 : Coordinates are inconsistent. If you connect them, it's not moving in straight or curve line.
2020-01-20 : Coordinates may not look too bad. The problem of this object is inconsistency of morphology.
If real objects are moving along the trajectories of both of them on that dates, they are non-group, not Marsden.

Worachate