Albedo Properties of km-sized Asteroids in the Main Belt

Details Albedo Properties of km-sized Asteroids in the Main Belt Albedo Properties of km-sized Asteroids in the Main Belt

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dps....41.5303r&link_type=abstract

American Astronomical Society, DPS meeting #41, #53.03

Astronomy and Astrophysics

Astronomy

Scientific paper

Serendipitous observations of main belt asteroids by the Spitzer Space Telescope have enabled determination of main belt asteroid albedos and diameters for targets as small as 0.5 km (eg., Ryan et al. 2009, AJ, 137, 5134). We have used multi-epoch data at 5.8, 8.0 and 24 microns from the MIPSGAL and Taurus Legacy Surveys to obtain diameters and albedos for a sample of approximately 1500 main belt asteroids. Using NEATM, we have obtained diameters ranging from 0.5 to 30 km and albedos ranging from 0.02 to 0.35. We present results on the albedo distribution as a function of semi-major axis and new analysis of the mean albedo of dynamical families within the main belt. We also include reanalysis of IRAS and MSX data as part of our efforts to add to our interpretation of dynamical family properties.

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