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2014 MT69
(formerly labeled 0720090F in the context of the Hubble Space Telescope, and 7 in the context of the ''New Horizons'' mission) is a Kuiper belt object (KBO) and formerly a potential flyby target for the ''New Horizons'' probe.
==Discovery and naming==
was discovered with the help of the Hubble Space Telescope (HST) because the object has a magnitude of 27.3, which is too faint to be observed by ground-based telescopes. Preliminary observations by the HST searching for KBO flyby targets for the ''New Horizons'' probe started in June 2014, and more intensive observations continued in July and August. was first discovered in observations on June 24, 2014 during the preliminary observations, but it was designated 0720090F at the time, nicknamed "7" for short.〔〔 Its existence as a potential target of the ''New Horizons'' probe was revealed by NASA in October 2014,〔 but the official name was not assigned by the Minor Planet Center (MPC) until March 2015 after better orbit information was available.〔 The parameters of the orbit have the extremely large uncertainty of 9 because follow-up observations after discovery eliminated as a potential target of the ''New Horizons'' probe, and no further follow-up observations were made.〔
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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