1999 ?? ?? 21 (????? ????? ???? (28274) 1999 ?? ?? 21 ??? ????? ?????? ?????? ) ( ??????????? : 1999 CF21 )?? ?? ????? ??? ???? ????????? . ?????? ??? ?????? ?????? ?????? ??? ?????? ?? ????????? ??????? ?? ????? ?? 10 ?????? 1999? ??????? 28274 ?? ??? ???????? . [2] [3]
?????? 28274 1999CF ?? 10 ?????? 1999 ?? ???? ????????? ???? ? ?????? ?? ?????? ?????? ? ????????? ?? ???????? ??????? ? ?????? ????? ??? ?????? ?? ????????? ??????? ?? ????? ( ??????????? : Lincoln Near-Earth Asteroid Research )? LINEAR . ??? ??? ??????? 1,260 ?????? ??????? ??? ???? 8 ?????? 2021 ?????? ????? ?????? ?????? ? ?? ?? ??? ????? 14,456 ????? (39.6 ???). ?????? ?????? ???????? ??????? 1,550 ????? (4.2 ???). [3]
????? ???? ??? ??????? ???? ???? ????? ???? 2.62 ???? ????? ? ????? ???? 2.32 ???? ?????? ??????? ???? 0.116 ?????? ????? 12.2 ???? ??????? ????? ????? . ???? ??? ???????? ?? ??? ?????? ??????? ??? 2 ?3.2 ???? ????? ????? ???? ?? 1,666 ???? ????? ? ????? ??? ?????? ?????? ????? ?????? ?????? ????? ????? ?????? ?????? ?????? ?????? ??????? ?????? ?? ???? ????????? ??????? . [3]
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