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2015 BP513
(also written 2015 BP513) is a near-Earth asteroid roughly 12–27 meters in diameter that passed less than 1 lunar distance from Earth on 18 January 2015.〔
==2015 flyby==
Until 18 January 2015 18:00 UT the small dim asteroid either had an elongation less than 45 degrees from the Sun or was significantly fainter than apparent magnitude 23.〔 On 18 January 2015 13:36 UT the asteroid passed from the Moon and at 17:09 UT passed from Earth.〔 The asteroid was not discovered until 9 days later on 27 January 2015 by Pan-STARRS at an apparent magnitude of 21 using a Ritchey–Chrétien telescope.〔 Two precovery images from 19 January 2015 when the asteroid was apparent magnitude 16 were then located.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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