Seems that the aerial camera took a photo in the just moment when something on the ground threw the sun light rays against it and a star glare effect appeared in the middle of the image.
Apparently, this isn't a physical artefact on the ground at all - it's where a small hole has been torn in the photographic negative. The star of light you can see is the scanner bulb shining through the hole onto the sensor.
A star reflection during the day seems a little...how u say...wacky?
Both in the Netherlands (Purmerend, Dronten) and yes it an artefact on the ground: a roof reflecting the light of the sun.
Explanation (in dutch, with pictures) - someone went to check the exact location: http://www.hippopotame.nl/index.asp?id=800