Nauchnij || N. S. Chernykh || NYS || align=right | 3.6 km || |-id=407 bgcolor=#fefefe | 23407 || || — || September 9, 1977 || Palomar || C. M. Olmstead || — || align=right | 1.4 km || |-id=408 bgcolor=#d6d6d6 | 23408 Beijingaoyun || || || October 12, 1977 || Nanking || Purple Mountain Obs. || INA || align=right | 17 km || |-id=409 bgcolor=#fefefe | 23409 Derzhavin || || || August 31, 1978 || Nauchnij || N. S. Chernykh || — || align=right | 3.3 km || |-id=410 bgcolor=#fefefe | 23410 Vikuznetsov || || || August 31, 1978 || Nauchnij || N. S. Chernykh || — || align=right | 3.0 km || |-id=411 bgcolor=#fefefe | 23411 Bayanova || || || September 26, 1978 || Nauchnij || L. V. Zhuravleva || — || align=right | 3.6 km || |-id=412 bgcolor=#E9E9E9 | 23412 || || — || October 27, 1978 || Palomar || C. M. Olmstead || — || align=right | 3.5 km || |-id=413 bgcolor=#E9E9E9 | 23413 || || — || November 7, 1978 || Palomar || E. F. Helin, S. J. Bus || — || align=right | 4.9 km || |-id=414 bgcolor=#fefefe | 23414 || || — || June 25, 1979 || Siding Spring || E. F. Helin, S. J. Bus || — || align=right | 5.3 km || |-id=415 bgcolor=#fefefe | 23415 || || — || June 25, 1979 || Siding Spring || E. F. Helin, S. J. Bus || — || align=right | 5.1 km || |-id=416 bgcolor=#fefefe | 23416 || || — || June 25, 1979 || Siding Spring || E. F. Helin, S. J. Bus || NYS || align=right | 2.4 km || |-id=417 bgcolor=#E9E9E9 | 23417 || || — || June 25, 1979 || Siding Spring || E. F. Helin, S. J. Bus || — || align=right | 3.4 km || |-id=418 bgcolor=#fefefe | 23418 || || — || August 22, 1979 || La Silla || C.-I. Lagerkvist || — || align=right | 1.9 km || |-id=419 bgcolor=#d6d6d6 | 23419 || || — || March 16, 1980 || La Silla || C.-I. Lagerkvist || EOS || align=right | 6.5 km || |-id=420 bgcolor=#E9E9E9 | 23420 || 1981 DO || — || February 28, 1981 || Siding Spring || S. J. Bus || — || align=right | 2.7 km || |-id=421 bgcolor=#d6d6d6 | 23421 || 1981 DR || — || February 28, 1981 || Siding