posted on Jul, 19 2011 @ 03:32 PM
Moon or a planet are the first things to discount, but that is hard to do with all the attitudes of the spacecraft and Shuttle being only a guess.
Unless someone mentions this in telemetry there is nothing for certain to say.
Yes, the wide angle needed to image the station from such a close proximity would make the Moon look that small. The phase if that could be discerned
would not only tell us it is the moon, but would give the correct direction to the Sun that could be corroborated by shadows on the station itself.
FYI, when you see Saturn in the sky, you might notice a star accompanying it. That is Titan, the largest moon of Saturn. With binoculars you will also
see Tethys and Enceladus between them. I don't think this object is Saturn however. Venus and Mercury are behind the Sun, and Mars and Jupiter are in
the day sky (Pisces). Moon is best bet.
ZG