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66652 Borasisi : ウィキペディア英語版 | 66652 Borasisi
66652 Borasisi is a binary classical Kuiper belt object. It was discovered in 1999 by Chad Trujillo, Jane X. Luu and David C. Jewitt〔 and identified as a binary in 2003 by K. Noll and colleagues〔 using the Hubble Telescope. ==Satellite==
In 2003 it was discovered that 66652 Borasisi is a binary with the components of comparable size (about 120–180 km) orbiting the barycentre on a moderately elliptical orbit.〔 〕 The total system mass is about 3.4 kg.〔 The companion (66652) Borasisi I, named Pabu orbits its primary in on an orbit with semi-major axis of and eccentricity . The orbit is inclined with respect to the observer by about 54° meaning that is about 35° from the pole-on position.
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