I've pasted another picture showing the direction of light in relation to the object. I determined the direction of sunlight by observing the shadow shape on the major crater to the far left in the image.
The object appears to transit between Mare Nectaris and Mare Tranquilitatis as seen from my vantage point in Tasmania.
The object exhibits no phase, so we may say that it is within the cone of shadow produced by the Earth. It is passing within the dimensions of of the Earth as measured along the equator.
Size is difficult to determine because the image contains no near Earth depth que with which to estimate the size of the object.
During observation it did not blink like a satellite would blink vis a vis no headlights. So let us assume for now that it is not a satellite.
A hunch tells me that the asteroid will reappear once more in the constellation of pisces. In Pisces it will light up on reflection from the sun. I don't know why I think that this is the place to look. It is only a hunch.
http://img518.imageshack.us/img518/5...thdot1avw8.jpg