List of asteroids/40401–40500

|| July 14, 1999 || Socorro || LINEAR
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40403 - || || August 31, 1999 || Oohira || T. Urata
-
40408 - || || September 4, 1999 || Ondřejov || L. Šarounová
-
40411 - || || September 7, 1999 || Socorro || LINEAR
-
40414 - || || September 7, 1999 || Socorro || LINEAR
-
40417 - || || September 7, 1999 || Socorro || LINEAR
-
40420 - || || September 7, 1999 || Socorro || LINEAR
-
40423 - || || September 7, 1999 || Socorro || LINEAR
-
40426 - || || September 7, 1999 || Socorro || LINEAR
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40429 - || || September 8, 1999 || Socorro || LINEAR
-
40432 - || || September 9, 1999 || Višnjan Observatory || K. Korlević
-
40435 - || || September 6, 1999 || Farpoint || G. Bell, G. Hug
-
40438 - || || September 11, 1999 || Ondřejov || P. Pravec, P. Kušnirák
-
40441 Jungmann || || September 7, 1999 || Uccle || E. W. Elst
-
40444 Palacký || || September 12, 1999 || Črni Vrh || Črni Vrh
-
40447 - || || September 12, 1999 || Višnjan Observatory || K. Korlević
-
40450 - || || September 12, 1999 || Reedy Creek || J. Broughton
-
40453 - || || September 12, 1999 || Catalina || CSS
-
40456 - || || September 14, 1999 || Višnjan Observatory || K. Korlević
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40459 Rektorys || || September 15, 1999 || Višnjan Observatory || K. Korlević
-
40462 - || || September 8, 1999 || Socorro || LINEAR
-
40465 - || || September 7, 1999 || Socorro || LINEAR
-
40468 - || || September 7, 1999 || Socorro || LINEAR
-
40471 - || || September 7, 1999 || Socorro || LINEAR
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40474 - || || September 7, 1999 || Socorro || LINEAR
-
40477 - || || September 7, 1999 || Socorro || LINEAR
-
40480 - || || September 7, 1999 || Socorro || LINEAR
-
40483 - || || September 7, 1999 || Socorro || LINEAR
-
40486 - || || September 7, 1999 || Socorro || LINEAR
-
40489 - || || September 7, 1999 || Socorro || LINEAR
-
40492 - || || September 7, 1999 || Socorro || LINEAR
-
40495 - || || September 7, 1999 || Socorro || LINEAR
-
40498 - || || September 7, 1999 || Socorro || LINEAR
-List of asteroids/Helper|404