Unknown Object in Two NASA STS-103 Mission Photos

The unknown object is self-luminous and seems to be oval or disk shaped.

Official NASA photo (low resolution):

http://eol.jsc.nasa.gov/scripts/sseop/photo.pl?mission=STS103&roll=734&frame=59&QueryResultsFile=127076938358121.tsv

Streetcap1 managed to get hold of the high resolution UFO photo before NASA pulled it:

http://www.youtube.com/watch?v=J0Sm2a5Q_Dg

The NASA STS-103 Space Shuttle Discovery mission:

Launch date: 19 December 1999 -
Landing date: 27 December 1999.

UFO News Article:
“UFOs? ‘There’s plenty of evidence’ ”,
11 April 2010 (The Buffalo News, New York)

The UFO phenomenon is a worthy area of study, says anthropology professor Philip Haseley in the following article:

http://www.buffalonews.com/2010/04/11/1015782/ufos-theres-plenty-of-evidence.html

Professor Haseley works at the Niagara County Community College in Sanborn, New York and is head of the Western New York Mutual UFO Network.

Philip Haseley,
Anthropology Professor
(The Buffalo News photo)