Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002pasj...54..635d&link_type=abstract
Publications of the Astronomical Society of Japan, Vol.54, No.4, pp.635-640
Astronomy and Astrophysics
Astronomy
15
Methods: Data Analysis, Minor Planets, Asteroids, Techniques: Photometric
Scientific paper
Near-Earth asteroid (25143) 1998 SF36 is now planned as the target for the Japanese MUSES-C sample return mission. We conducted extensive photometric observations at NAO-Mitaka from 2001 February 15 until March 19 to obtain its physical properties, such as asteroid's colors, rotation period, phase curve, and light curves. The colors of this asteroid were found to be S-type and in agreement with the spectroscopic result by Binzel et al. (2001,Meteor. Planet. Sci., 36, 1167). From the phase curve of this object, the visual absolute magnitude is obtained to be 18.61 +/- 0.18; we suggest that the albedo may be higher than that for typical S-type asteroids, after applying a known empirical relation between phase curve slope and geometric albedo. We also reveal that the synodic rotation period of this asteroid is 12.13 +/- 0.02 hr and the peak-to-peak light variation amplitude at zero phase angle has been shown to be ~ 0.49 mag, which implies the ra tio of the longest and intermediate ellipsoidal axes for the asteroid >~ 1.6.
dermawan Budi
Fukushima Hideo
Nakamura Tsuko
Sato Hideo
Sato Yusuke
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