Radiometric and Photometric Constraints to the Non-Spherical Geometry of Haumea

Details Radiometric and Photometric Constraints to the Non-Spherical Geometry of Haumea Radiometric and Photometric Constraints to the Non-Spherical Geometry of Haumea

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dps....41.6506l&link_type=abstract

American Astronomical Society, DPS meeting #41, #65.06

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Kuiper Belt objects reveal clues as to the dynamical interactions and physical processes at work during the primordial Solar System. The most unique and complex Kuiper Belt object is (136108) Haumea, a rapidly-rotating, elongated body with 2 satellites and 7 dynamically-related family members. We use infrared radiometry and visible photometry to measure the size, shape and albedo of Haumea. We have modified a standard thermal model to account for the highly non-spherical geometry of the object. We find that the size and shape of the body is not uniquely constrained with thermal and visible lightcurves. We present constraints on the size, density and visual albedo of Haumea and determine a unique size of the body if we assume it to be the relaxation of a homogeneous fluid.

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