CCD photometry and model of MUSES-C target (25143) 1998 SF36

Mikko Kaasalainen (1) , T. Kwiatkowski (2) , M. Abe (3) , J. Piironen (1) , T. Nakamura (4) , Y. Ohba (3) , Budi Dermawan (5) , Tony L. Farnham (6) , François Colas (7) , Stephen Lowry (8) , Paul R. Weissman (8) , R. J. Whiteley (9) , David J. Tholen (10) , S. M. Larson (9) , Makoto Yoshikawa (3) , Imre Toth (11) , F. P. Velichko (12)

1 Jakokoski Observatory, University of Helsinki
2 Astronomical Observatory, Adam Mickiewicz University
3 ISAS - Institute of Space and Astronautical Science
4 NAOJ - National Astronomical Observatory of Japan
5 Graduate School of Science, University of Tokyo
6 Department of Astronomy, University of Texas
7 IMCCE - Institut de Mécanique Céleste et de Calcul des Ephémérides
8 JPL - Jet Propulsion Laboratory
9 LPL - Lunar and Planetary Laboratory [University of Arizona]
10 Institute for Astronomy, University of Hawaii
11 Konkoly Observatory, Research Center for Astronomy and Earth Sciences
12 Astronomical Institute of Kharkov National University

We present photometric observations of the near-Earth asteroid (25143) 1998 SF36 from the 2001 apparition campaign, and we discuss the corresponding physical model. The asteroid's photometric behaviour is consistent with an S-type object, it has a retrograde pole at lambda =355^o, begin {equation}ta=-84^opartialm 5^o, and its sidereal rotation period is P=12.132partialm 0.0005 hours. 1998 SF36 is elongated, with rough global dimension ratios a/b=2.0, b/c=1.3, but the elongation is not due to a bifurcated shape. The surface is not likely to contain major concavities. No significant albedo variegation was detected.

Domaines: Astrophysique [astro-ph]

Mikko Kaasalainen, T. Kwiatkowski, M. Abe, J. Piironen, T. Nakamura, et al.. CCD photometry and model of MUSES-C target (25143) 1998 SF36. Astronomy and Astrophysics - A&A, 2003, 405, pp.L29-L32. ⟨10.1051/0004-6361:20030819⟩. ⟨hal-03786338⟩