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Pole orientation and triaxial ellipsoid shape of (25143) 1998 SF36, a target asteroid of the MUSES-C* mission

Earth, Planets and Spacevolume 55, pages341–347 (2003)Cite this article

Abstract

The near-earth asteroid (25143) 1998 SF36 is a target body for the Japanese sample-return MUSES-C mission. We present here its pole orientation and triaxial ellipsoid shape, using light curve data obtained with three telescopes at Kiso, Mitaka, and Pic du Midi. The solution obtained for the pole orientation has ecliptic latitude λ= 320± 30° and ecliptic longitude β= —75± 12°. The estimated triaxial ellipsoid shape isa/b= 2.1 andb/c= 1.7 assumingm= 0.03, which is the coefficient of the empirical relation between the light curve amplitude and the phase angle for S-type asteroids (Zappalàet al., 1990). We also foundm to be related to asteroid surface roughness, using a light curve simulator.

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Authors and Affiliations

  1. Planetary Science Division, The Institute of Space and Astronautical Science (ISAS), 3-1-1 Yoshinodai, Sagamihara, Kanagawa, 229-8510, Japan

    Youhei Ohba, Masanao Abe, Sunao Hasegawa, Masateru Ishiguro & Akira Fujiwara

  2. Poznan Astronomical Observatory, ul. Sloneczna 36, PL-60-286 Poznan, A. Mickiewicz University, Poland

    Tomasz Kwiatkowski

  3. Institut de Mécanique Céleste, 77 Av. Denfert Rochereau, 75014, Paris, France

    Francois Colas

  4. School of Science, The University of Tokyo, Bunkyo, Tokyo, 113-0033, Japan

    Budi Dermawan

Authors
  1. Youhei Ohba

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  2. Masanao Abe

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  3. Sunao Hasegawa

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  4. Masateru Ishiguro

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  5. Tomasz Kwiatkowski

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  6. Francois Colas

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  7. Budi Dermawan

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  8. Akira Fujiwara

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Ohba, Y., Abe, M., Hasegawa, S.et al. Pole orientation and triaxial ellipsoid shape of (25143) 1998 SF36, a target asteroid of the MUSES-C* mission.Earth Planet Sp55, 341–347 (2003). https://doi.org/10.1186/BF03351767

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