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

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

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ep%26s...55..341o&link_type=abstract

Earth, Planets and Space, Volume 55, p. 341-347.

Physics

4

Scientific paper

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 l= 320 ± 30° and ecliptic longitude b= -75 ° 12°. The estimated triaxial ellipsoid shape is a/b = 2.1 and b/c = 1.7 assuming m = 0.03, which is the coefficient of the empirical relation between the light curve amplitude and the phase angle for S-type asteroids (Zappalá et al., 1990). We also found m to be related to asteroid surface roughness, using a light curve simulator.

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