|| Palomar || PLS || AGN || align=right | 3.1 km || |-id=270 bgcolor=#fefefe | 18270 || 2312 T-3 || — || October 16, 1977 || Palomar || PLS || — || align=right | 2.5 km || |-id=271 bgcolor=#fefefe | 18271 || 2332 T-3 || — || October 16, 1977 || Palomar || PLS || V || align=right | 4.3 km || |-id=272 bgcolor=#fefefe | 18272 || 2495 T-3 || — || October 16, 1977 || Palomar || PLS || — || align=right | 2.7 km || |-id=273 bgcolor=#fefefe | 18273 || 3140 T-3 || — || October 16, 1977 || Palomar || PLS || — || align=right | 2.2 km || |-id=274 bgcolor=#E9E9E9 | 18274 || 3150 T-3 || — || October 16, 1977 || Palomar || PLS || AST || align=right | 5.1 km || |-id=275 bgcolor=#E9E9E9 | 18275 || 3173 T-3 || — || October 16, 1977 || Palomar || PLS || — || align=right | 6.7 km || |-id=276 bgcolor=#E9E9E9 | 18276 || 3355 T-3 || — || October 16, 1977 || Palomar || PLS || — || align=right | 6.0 km || |-id=277 bgcolor=#E9E9E9 | 18277 || 3446 T-3 || — || October 16, 1977 || Palomar || PLS || — || align=right | 8.2 km || |-id=278 bgcolor=#C2FFFF | 18278 Drymas || 4035 T-3 || || October 16, 1977 || Palomar || PLS || L5 || align=right | 29 km || |-id=279 bgcolor=#E9E9E9 | 18279 || 4221 T-3 || — || October 16, 1977 || Palomar || PLS || — || align=right | 8.9 km || |-id=280 bgcolor=#fefefe | 18280 || 4245 T-3 || — || October 16, 1977 || Palomar || PLS || V || align=right | 3.1 km || |-id=281 bgcolor=#C2FFFF | 18281 Tros || 4317 T-3 || || October 16, 1977 || Palomar || PLS || L5 || align=right | 14 km || |-id=282 bgcolor=#C2FFFF | 18282 Ilos || 4369 T-3 || || October 16, 1977 || Palomar || PLS || L5 || align=right | 15 km || |-id=283 bgcolor=#fefefe | 18283 || 5165 T-3 || — || October 16, 1977 || Palomar || PLS || V || align=right | 2.6 km || |-id=284 bgcolor=#FA8072 | 18284 Tsereteli || 1970 PU || || August 10, 1970 || Nauchnij || Crimean Astrophysical Obs. || — || align=right | 3.4 km || |-id=285 bgcolor=#E9E9E9 | 18285 Vladplatonov || 1972 GJ || || April