1999 || Xinglong || SCAP || PHO || align=right | 3.2 km || |-id=272 bgcolor=#fefefe | 40272 || || — || May 8, 1999 || Catalina || CSS || CHL || align=right | 3.3 km || |-id=273 bgcolor=#fefefe | 40273 || || — || May 13, 1999 || Reedy Creek || J. Broughton || — || align=right | 5.4 km || |-id=274 bgcolor=#fefefe | 40274 || || — || May 10, 1999 || Socorro || LINEAR || — || align=right | 2.4 km || |-id=275 bgcolor=#fefefe | 40275 || || — || May 10, 1999 || Socorro || LINEAR || V || align=right | 1.6 km || |-id=276 bgcolor=#fefefe | 40276 || || — || May 10, 1999 || Socorro || LINEAR || — || align=right | 2.2 km || |-id=277 bgcolor=#E9E9E9 | 40277 || || — || May 10, 1999 || Socorro || LINEAR || — || align=right | 4.7 km || |-id=278 bgcolor=#fefefe | 40278 || || — || May 10, 1999 || Socorro || LINEAR || FLO || align=right | 2.0 km || |-id=279 bgcolor=#fefefe | 40279 || || — || May 10, 1999 || Socorro || LINEAR || V || align=right | 2.1 km || |-id=280 bgcolor=#fefefe | 40280 || || — || May 10, 1999 || Socorro || LINEAR || — || align=right | 1.7 km || |-id=281 bgcolor=#E9E9E9 | 40281 || || — || May 10, 1999 || Socorro || LINEAR || — || align=right | 8.8 km || |-id=282 bgcolor=#E9E9E9 | 40282 || || — || May 10, 1999 || Socorro || LINEAR || EUN || align=right | 6.6 km || |-id=283 bgcolor=#E9E9E9 | 40283 || || — || May 10, 1999 || Socorro || LINEAR || — || align=right | 4.8 km || |-id=284 bgcolor=#fefefe | 40284 || || — || May 10, 1999 || Socorro || LINEAR || — || align=right | 1.9 km || |-id=285 bgcolor=#fefefe | 40285 || || — || May 10, 1999 || Socorro || LINEAR || — || align=right | 1.6 km || |-id=286 bgcolor=#fefefe | 40286 || || — || May 10, 1999 || Socorro || LINEAR || — || align=right | 1.9 km || |-id=287 bgcolor=#fefefe | 40287 || || — || May 10, 1999 || Socorro || LINEAR || — || align=right | 2.1 km || |-id=288 bgcolor=#fefefe | 40288 || || — || May 10, 1999 || Socorro || LINEAR || NYS