P2-05 小惑星(163249)2002GTの多色ライトカーブ観測(ポスターセッション2,ポスター発表)

概要

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NASA's Deep Impact/EPOXI spacecraft will encounter the asteroid (163249) 2002 GT, which is designated as a Potentially Hazardous Asteroid, on January 4, 2020. At present there is little more known about the nature of 2002 GT, but in mid-2013 it passes near the Earth affording an exceptional opportunity for ground-based characterization. Light curve measurements across a wide range of viewing perspectives will reveal the rotation rate and ultimately lead to strong constraints on the shape and pole orientation. Light curve observations would also be likely to reveal whether the object is a binary asteroid. We carried out multi-color lightcurve observation of 2002 GT with an 32-inch astronomical telescope and B-V-R-I filters at Tenagra Observatories in Arizona, USA and will discuss its nature.
日本惑星科学会の論文
2013-11-20