Shape of Asteroid 4769 Castalia (1989 PB) from Inversion of Radar Images

Details Shape of Asteroid 4769 Castalia (1989 PB) from Inversion of Radar Images Shape of Asteroid 4769 Castalia (1989 PB) from Inversion of Radar Images

Feb 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994sci...263..940h&link_type=abstract

Science, Volume 263, Issue 5149, pp. 940-943

Physics

84

Scientific paper

The inversion of previously reported, delay-Doppler images of Castalia yields a 167-parameter, three-dimensional shape model that is bifurcated into two distinct, irregular, kilometer-sized lobes. The crevice that separates the lobes has an average depth of between 100 and 150 meters and is oriented roughly perpendicular to the asteroid's longest dimension. The constrained least-squares reconstruction method introduced here can be used to determine the shape, spin vector, and radar-scattering properties of any asteroid or comet for which delay-Doppler images provide sufficient signal-to-noise ratio, orientational coverage, and spatial resolution.

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