Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004pasj...56.1105y&link_type=abstract
Publications of the Astronomical Society of Japan, Vol.56, No.6, pp. 1105-1113
Astronomy and Astrophysics
Astronomy
14
Minor Planets, Asteroids: Individual (Karin), Asteroids: Photometry
Scientific paper
The asteroid (832) Karin is the largest member of the Karin family, which is thought to have been formed by a catastrophic collision 5.8Myr ago. We performed photometric observations of Karin from 2003 July to September, and we report here on its lightcurve and colors in several visible bands. The rotational synodic period of Karin was determined to be 18.35 ± 0.02 hr. Its absolute magnitude (H) and the slope parameter (G) of the solar phase curve were 11.49 ± 0.02 and 0.19 ± 0.04, respectively. Based on our color observations, we confirmed that Karin is an S-type asteroid. In addition, we found that there is likely to be a color variation over the surface of Karin. We infer that the color variation is due to the difference between the fresh surface, excavated by the family-forming disruption, and the weathered surface, exposed to space radiation and particle bombardment over a long period.
dermawan Budi
Haji Masashige
Hirai Masanori
Ito Takashi
Malhotra Renu
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