The lightcurve and rotation period of asteroid 139 Juewa

Details The lightcurve and rotation period of asteroid 139 Juewa The lightcurve and rotation period of asteroid 139 Juewa

Sep 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976icar...29..137g&link_type=abstract

Icarus, vol. 29, Sept. 1976, p. 137-142.

Other

11

Asteroids, Astronomical Photometry, Light Curve, Planetary Rotation, Electrophotometry, Planet Ephemerides, Planetary Surfaces

Scientific paper

Results of broadband photoelectric photometry of 139 Juewa during five consecutive nights in March 1974 are presented. The synodic period found is 20.9 hr. A linear phase coefficient of about 0.080 is determined between phase angles of 0.9 to 1.5 deg. This value is similar to that for the lunar highlands and for three other asteroids (4 Vesta, 20 Massalia, 110 Lydia) at similar phase angles, indicating that these surfaces have comparable porosities. The composite light curve presented covers 80% of the rotational period; short-timescale features in the light curve are seen which correspond to topography a few kilometers in size.

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