* your approximate location on Earth
* what shape the object was
* how much of the Moon it obscured
* which direction it was traveling
* how fast it was moving
* were you observing naked eye or via binoculars or telescope (and if the latter, what kind and size)
* any other contextual clues you might have
If it was very tiny and you were using binoculars and were *very* lucky, you might have seen a spacecraft in low Earth orbit transiting the Moon. It's not a common event, but predictable; dedicated observers plan ahead and sometimes even drive long distances to get into the narrow path from which the transit will be visible. They get some awesome pictures. I've seen images of the ISS, Shuttle, Mir, and Hubble transiting the Sun or Moon. (Warning: never try to watch a solar transit with a telescope or binoculars unless you have a full-aperture solar filter! Alternately, you can use the telescope/binocs to project an image of the Sun onto a flat surface, but this may be damaging to the optics; the full-aperture solar filter is best.)
More likely, though, you saw some more terrestrial object passing in front of the Moon. We probably won't be able to deduce what it was for you, since we didn't see it ourselves.
I saw TWO things in the sky. One is very very bright and can only be seen during the day.
The Other varies in size and brightness and sometimes you see it during the day, but most of the time at night.
And whats the deal with those wandering stars? Leo just didnt look the same this past year. Just when Im sure of what a constellation looks like, one of those pesky wandering stars floats in and messes the entire thing up.