• 1993 TT37 — October 9, 1993 La Silla E. W. Elst V 1.8 km MPC · JPL 37633 1993 TG39 — October 9, 1993 La Silla E. W. Elst NYS 1.8 km MPC · JPL 37634 1993...
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  • Helin". www.planetary.org. Retrieved 16 March 2019. Lee Siegel (7 February 1993). "20-Year Quest Makes Astronomer No. 1 in Finding Doomsday Asteroids : Space:...
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