Original: Simon F. Green and John K. Davies discovered it in images from October 11, 1983 while searching Infrared Astronomical Satellite (IRAS) data for moving objects.
Simplified: Simon F. Green and John K. Davies, while searching Infrared Astronomical Satellite (IRAS) data for moving objects, found 3200 Phaethon (1983 TB) in pictures from October 11, 1983.