List of asteroids/121201–121300

|| July 13, 1999 || Socorro || LINEAR
-
121203 - || || August 8, 1999 || Prescott || P. G. Comba
-
121206 - || || August 8, 1999 || Gekko || T. Kagawa
-
121209 - || || September 4, 1999 || Catalina || CSS
-
121212 - || || September 3, 1999 || Kitt Peak || Spacewatch
-
121215 - || || September 7, 1999 || Socorro || LINEAR
-
121218 - || || September 7, 1999 || Socorro || LINEAR
-
121221 - || || September 7, 1999 || Socorro || LINEAR
-
121224 - || || September 7, 1999 || Socorro || LINEAR
-
121227 - || || September 8, 1999 || Socorro || LINEAR
-
121230 - || || September 11, 1999 || Starkenburg Observatory || Starkenburg
-
121233 - || || September 13, 1999 || Kanab || E. E. Sheridan
-
121236 - || || September 7, 1999 || Socorro || LINEAR
-
121239 - || || September 7, 1999 || Socorro || LINEAR
-
121242 - || || September 7, 1999 || Socorro || LINEAR
-
121245 - || || September 7, 1999 || Socorro || LINEAR
-
121248 - || || September 7, 1999 || Socorro || LINEAR
-
121251 - || || September 7, 1999 || Socorro || LINEAR
-
121254 - || || September 7, 1999 || Socorro || LINEAR
-
121257 - || || September 7, 1999 || Socorro || LINEAR
-
121260 - || || September 7, 1999 || Socorro || LINEAR
-
121263 - || || September 8, 1999 || Socorro || LINEAR
-
121266 - || || September 8, 1999 || Socorro || LINEAR
-
121269 - || || September 9, 1999 || Socorro || LINEAR
-
121272 - || || September 9, 1999 || Socorro || LINEAR
-
121275 - || || September 9, 1999 || Socorro || LINEAR
-
121278 - || || September 9, 1999 || Socorro || LINEAR
-
121281 - || || September 9, 1999 || Socorro || LINEAR
-
121284 - || || September 9, 1999 || Socorro || LINEAR
-
121287 - || || September 9, 1999 || Socorro || LINEAR
-
121290 - || || September 9, 1999 || Socorro || LINEAR
-
121293 - || || September 9, 1999 || Socorro || LINEAR
-
121296 - || || September 9, 1999 || Socorro || LINEAR
-
121299 - ||