bgcolor=#fefefe | 44575 || || — || April 7, 1999 || Kitt Peak || Spacewatch || — || align=right | 3.2 km || |-id=576 bgcolor=#d6d6d6 | 44576 || || — || April 11, 1999 || Kitt Peak || Spacewatch || fast? || align=right | 5.5 km || |-id=577 bgcolor=#E9E9E9 | 44577 || || — || April 15, 1999 || Socorro || LINEAR || — || align=right | 5.0 km || |-id=578 bgcolor=#fefefe | 44578 || || — || April 6, 1999 || Socorro || LINEAR || SUL || align=right | 5.6 km || |-id=579 bgcolor=#d6d6d6 | 44579 || || — || April 6, 1999 || Socorro || LINEAR || KOR || align=right | 4.9 km || |-id=580 bgcolor=#E9E9E9 | 44580 || || — || April 7, 1999 || Socorro || LINEAR || — || align=right | 2.4 km || |-id=581 bgcolor=#fefefe | 44581 || || — || April 12, 1999 || Socorro || LINEAR || — || align=right | 1.6 km || |-id=582 bgcolor=#d6d6d6 | 44582 || || — || May 8, 1999 || Catalina || CSS || — || align=right | 4.5 km || |-id=583 bgcolor=#fefefe | 44583 || || — || May 12, 1999 || Socorro || LINEAR || H || align=right | 1.7 km || |-id=584 bgcolor=#fefefe | 44584 || || — || May 10, 1999 || Socorro || LINEAR || NYS || align=right | 1.8 km || |-id=585 bgcolor=#fefefe | 44585 || || — || May 10, 1999 || Socorro || LINEAR || NYS || align=right | 1.9 km || |-id=586 bgcolor=#E9E9E9 | 44586 || || — || May 12, 1999 || Socorro || LINEAR || WIT || align=right | 2.8 km || |-id=587 bgcolor=#fefefe | 44587 || || — || May 12, 1999 || Socorro || LINEAR || FLO || align=right | 1.4 km || |-id=588 bgcolor=#fefefe | 44588 || || — || May 14, 1999 || Socorro || LINEAR || H || align=right | 1.4 km || |-id=589 bgcolor=#fefefe | 44589 || || — || June 11, 1999 || Socorro || LINEAR || H || align=right | 2.0 km || |-id=590 bgcolor=#fefefe | 44590 || || — || June 12, 1999 || Socorro || LINEAR || H || align=right | 1.3 km || |-id=591 bgcolor=#fefefe | 44591 || || — || July 14, 1999 || Socorro || LINEAR || — || align=right | 2.9 km || |-id=592 bgcolor=#fefefe | 44592 || 1999 OM ||