Thực đơn
(27981)_1997_UK21Thực đơn
(27981)_1997_UK21Liên quan
(27981) 1997 UK21 (27980) 1997 UA21 27986 Hanuš 27983 Bernardi 2798 Vergilius 27988 Menabrea 27984 Herminefranz 27985 Remanzacco (279754) 1998 UB18 (27929) 1997 FC1Tài liệu tham khảo
WikiPedia: (27981)_1997_UK21 http://www.wolframalpha.com/entities/minor_planets... http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=27981