257001–257100
|-bgcolor=#d6d6d6
| 257001 || || — || March 10, 2008 || Kitt Peak || Spacewatch || — || align=right | 3.2 km || |-id=002 bgcolor=#E9E9E9 | 257002 || || — || March 4, 2008 || Mount Lemmon || Mount Lemmon Survey || — || align=right | 2.1 km || |-id=003 bgcolor=#E9E9E9 | 257003 || || — || March 11, 2008 || Catalina || CSS || EUN || align=right | 2.0 km || |-id=004 bgcolor=#d6d6d6 | 257004 || || — || March 8, 2008 || Mount Lemmon || Mount Lemmon Survey || KAR || align=right | 1.2 km || |-id=005 bgcolor=#E9E9E9 | 257005 Arpadpal || || || March 11, 2008 || La Silla || EURONEAR || HOF || align=right | 3.1 km || |-id=006 bgcolor=#d6d6d6 | 257006 || || — || March 15, 2008 || Kitt Peak || Spacewatch || — || align=right | 3.4 km || |-id=007 bgcolor=#d6d6d6 | 257007 || || — || March 4, 2008 || Kitt Peak || Spacewatch || — || align=right | 4.8 km || |-id=008 bgcolor=#d6d6d6 | 257008 || || — || March 1, 2008 || Kitt Peak || Spacewatch || — || align=right | 2.8 km || |-id=009 bgcolor=#E9E9E9 | 257009 || || — || March 2, 2008 || Kitt Peak || Spacewatch || — || align=right | 2.3 km || |-id=010 bgcolor=#d6d6d6 | 257010 || || — || March 6, 2008 || Catalina || CSS || TIR || align=right | 7.5 km || |-id=011 bgcolor=#E9E9E9 | 257011 || || — || March 9, 2008 || Socorro || LINEAR || — || align=right | 1.5 km || |-id=012 bgcolor=#d6d6d6 | 257012 || || — || March 14, 2008 || Socorro || LINEAR || — || align=right | 5.3 km || |-id=013 bgcolor=#E9E9E9 | 257013 || || — || March 25, 2008 || Kitt Peak || Spacewatch || HOF || align=right | 2.7 km || |-id=014 bgcolor=#d6d6d6 | 257014 || || — || March 30, 2008 || Piszkéstető || K.