1999 || Anderson Mesa || LONEOS || — || align=right | 4.3 km || |-id=568 bgcolor=#fefefe | 31568 || || — || March 19, 1999 || Kitt Peak || Spacewatch || — || align=right | 2.5 km || |-id=569 bgcolor=#fefefe | 31569 Adriansonka || || || March 22, 1999 || Anderson Mesa || LONEOS || V || align=right | 4.1 km || |-id=570 bgcolor=#E9E9E9 | 31570 || || — || March 22, 1999 || Anderson Mesa || LONEOS || — || align=right | 7.4 km || |-id=571 bgcolor=#E9E9E9 | 31571 || || — || March 25, 1999 || Kleť || Kleť Obs. || — || align=right | 2.7 km || |-id=572 bgcolor=#fefefe | 31572 || || — || March 19, 1999 || Socorro || LINEAR || — || align=right | 5.0 km || |-id=573 bgcolor=#fefefe | 31573 Mohanty || || || March 19, 1999 || Socorro || LINEAR || — || align=right | 2.8 km || |-id=574 bgcolor=#fefefe | 31574 Moshova || || || March 19, 1999 || Socorro || LINEAR || — || align=right | 2.3 km || |-id=575 bgcolor=#fefefe | 31575 Nikhilmurthy || || || March 19, 1999 || Socorro || LINEAR || V || align=right | 1.8 km || |-id=576 bgcolor=#E9E9E9 | 31576 Nandigala || || || March 19, 1999 || Socorro || LINEAR || — || align=right | 2.8 km || |-id=577 bgcolor=#E9E9E9 | 31577 || || — || March 19, 1999 || Socorro || LINEAR || — || align=right | 6.0 km || |-id=578 bgcolor=#E9E9E9 | 31578 || || — || March 19, 1999 || Socorro || LINEAR || AGN || align=right | 4.0 km || |-id=579 bgcolor=#d6d6d6 | 31579 || || — || March 19, 1999 || Socorro || LINEAR || HYG || align=right | 8.0 km || |-id=580 bgcolor=#fefefe | 31580 Bridgetoei || || || March 19, 1999 || Socorro || LINEAR || — || align=right | 3.0 km || |-id=581 bgcolor=#fefefe | 31581 Onnink || || || March 19, 1999 || Socorro || LINEAR || FLO || align=right | 4.6 km || |-id=582 bgcolor=#E9E9E9 | 31582 Miraeparker || || || March 19, 1999 || Socorro || LINEAR || — || align=right | 3.7 km || |-id=583 bgcolor=#d6d6d6 | 31583 || || — || March 19, 1999 || Socorro || LINEAR || HYG || align=right | 11 km || |-id=584 bgcolor=#fefefe | 31584 Emaparker || || || March 19, 1999 || Socorro ||