Very fast object

A faint trail is apparent in this 10-sec exposure taken on 1996 Feb. 9. This is an object moving at a speed of about 10 degrees in one hour. We have followed up it for 50 minutes, but then we lost it. In the case of natural origin of the body, its dimensions could be roughly 20 m and the distance in order of 100 000 km, but an artificial origin cannot be excluded (B. Marsden, personal communication).