|| |-id=289 bgcolor=#E9E9E9 | 53289 || || — || April 7, 1999 || Nachi-Katsuura || Y. Shimizu, T. Urata || — || align=right | 4.1 km || |-id=290 bgcolor=#d6d6d6 | 53290 || || — || April 10, 1999 || Anderson Mesa || LONEOS || — || align=right | 5.7 km || |-id=291 bgcolor=#d6d6d6 | 53291 || || — || April 11, 1999 || Kitt Peak || Spacewatch || THM || align=right | 6.2 km || |-id=292 bgcolor=#d6d6d6 | 53292 || || — || April 11, 1999 || Kitt Peak || Spacewatch || THM || align=right | 5.2 km || |-id=293 bgcolor=#d6d6d6 | 53293 || || — || April 14, 1999 || Kitt Peak || Spacewatch || THM || align=right | 6.3 km || |-id=294 bgcolor=#E9E9E9 | 53294 || || — || April 15, 1999 || Socorro || LINEAR || GEF || align=right | 4.6 km || |-id=295 bgcolor=#E9E9E9 | 53295 || || — || April 15, 1999 || Socorro || LINEAR || — || align=right | 3.7 km || |-id=296 bgcolor=#E9E9E9 | 53296 || || — || April 6, 1999 || Socorro || LINEAR || — || align=right | 6.6 km || |-id=297 bgcolor=#E9E9E9 | 53297 || || — || April 6, 1999 || Socorro || LINEAR || — || align=right | 3.6 km || |-id=298 bgcolor=#d6d6d6 | 53298 || || — || April 6, 1999 || Socorro || LINEAR || KOR || align=right | 6.5 km || |-id=299 bgcolor=#d6d6d6 | 53299 || || — || April 7, 1999 || Socorro || LINEAR || KOR || align=right | 3.5 km || |-id=300 bgcolor=#d6d6d6 | 53300 || || — || April 7, 1999 || Socorro || LINEAR || — || align=right | 5.7 km || |} 53301–53400 |-bgcolor=#E9E9E9 | 53301 || || — || April 6, 1999 || Socorro || LINEAR || — || align=right | 3.0 km || |-id=302 bgcolor=#E9E9E9 | 53302 || || — || April 6, 1999 || Socorro || LINEAR || MAR || align=right | 4.0 km || |-id=303 bgcolor=#d6d6d6 | 53303 || || — || April 12, 1999 || Socorro || LINEAR || EOS || align=right | 8.6 km || |-id=304 bgcolor=#E9E9E9 | 53304 || || — || April 6, 1999 || Anderson Mesa || LONEOS || ADE || align=right | 7.7 km || |-id=305 bgcolor=#E9E9E9 | 53305 || || — || April 11, 1999 || Anderson Mesa || LONEOS || — || align=right | 7.1