Mysterious object or planet moves over the sun on SOHO imagery

NASA has no explanation or announcements on what this could be so we can only guess that this is another planet moving past the SOHO imagery. The question is what planet could this be? Is it a astroid,  Venus or Mercury maybe?

Something did move past the sun, people online believe it could everything from the “nibiru” / planet x theory to a camera anomaly but no one has come out with an official answer yet.

That planet scientists talked about a few days ago, throwing ice bullets and causing chaos on earth, maybe he came for a visit.

The imagery is from 2010/12/06

What could this be?

Update: You might want to look at around 10 second into the video, it happens fast because the video is actually in fast forward mode,not real time. You can see the “object” coming in from the right side at around 10 or 11 seconds into the video.

Update: Could it be our moon?

Earlier this year NASA posted a few pictures and said the following:

This was a first for SDO and it was visually engaging too. On October 7, 2010, SDO observed its first lunar transit when the new Moon passed directly between the spacecraft (in its geosynchronous orbit) and the Sun. With SDO watching the Sun in a wavelength of extreme ultraviolet light, the dark Moon created a partial eclipse of the Sun.

These images, while unusual and cool to see, have practical value to the SDO science team. Karel Schrijver of Lockheed-Martin’s Solar and Astrophysics Lab explains: “The very sharp edge of the lunar limb allows us to measure the in-orbit characteristics of the telescope e.g., light diffraction on optics and filter support grids. Once these are characterized, we can use that information to correct our data for instrumental effects and sharpen up the images to even more detail.”

The images below show both a full disk version and a close-up of the event.

Update: The moon did not pass between the earth and the sun as shown in the video above at that time when the video was taken

Cant be the moon, what is it?