Whilst showing the moon to friends through my 80mm APO tonight at approx 2115hrs we saw a tumbling pointed xmas tree shape (or strange plane?) cross the crescent and move south staying at I think about 13hrs RA (I had not bothered to polar align accurately so can't be exactly sure on this, but not much ra adjustment required, a lot of dec). It appeared to be in a polar orbit as it got smaller and further away - it was not falling. When it was close to the moon it seemed to be more reflective on one side. It had some thickness to it and I'm going to guess it was about 1/10 deg when it crossed the moon. We stopped folloing it when a house got in the way. What have we seen? Cheers David