Bluebird, maybe.

I see a blue thing which looks almost like a crescent moon. At the level of "zoom" that you're placemark shows, the image is pixellated into unrecognizability. If you "zoom" out a little, it takes on a more circular, crescent shape. I wonder if it isn't an internal reflection in the recording telescoper or instrument, off-axis, from an actual crescent moon, i.e. the real moon, our moon. The uniform blue color makes me think it is a filtered image.

I vote for a spurious internal reflection, recorded with a blue filter, of our moon at crescent phase.