http://www.helioviewer.org/ The settings are below to view the object. It is a persistent spherical object much larger than jupiter and it does not move AT ALL. you can go back in time in the viewer and it is persistent. I thought it might be a CME but time lapse does not agree.Very strange indeed. What do you guys think it is? Observatory: stereo A Instrument: secchi Detector: core2 Measurement: white-light Edit: It does appear to move... but it does not orbit the sun.
There is no way an object the size of JUPITER could be near the Sun at close range (closer than Mercury)....and at the least, never have been seen before, and more to the point EXIST without have been destroyed by gravimetrics.
The most likely explanation for any strange object that never moves around is a defect of the optics or the camera itself. In this case, NASA claims that you're seeing a fiber on the ccd camera. http://stereo.gsfc.nasa.gov/artifacts/artifacts_camera.shtml I apologize for the rather unspectacular explanation.
You're not talking about the big black circle in the middle are you? You do realise that's part of the camera lens.