Observations of photopolarimetric variation with the rotation of asteroids, 3 Juno and 216 Kleopatra

Details Observations of photopolarimetric variation with the rotation of asteroids, 3 Juno and 216 Kleopatra Observations of photopolarimetric variation with the rotation of asteroids, 3 Juno and 216 Kleopatra

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mmsai..73..658s&link_type=abstract

in Memorie della Società' Astronomica Italiana, vol. 73, no. 3, p. 658

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We present the observed results of time variations of brightness and polarization with the rotation of an asteroid for 3 Juno (S-type main belt asteroid) and 216 Kleopatra (M-type main belt asteroid). Taking into account an empirical relation between the polarization and the albedo of an asteroid in Lupishko and Mohamed (1996, Icarus 119, 209), we converted our polarimetric data to the time variation of albedo with the rotation of an asteroid. It is found that the inhomogeneous distribution of albedo exists on the surface of both asteroids. Resulting modulation of albedo for 3 Juno and 216 Kleopatra shows a variation between 0.14-0.20 and 0.08-0.14, respectively.

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