Mathematics – Probability
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dps....41.3405c&link_type=abstract
American Astronomical Society, DPS meeting #41, #34.05
Mathematics
Probability
Scientific paper
Rotation periods or lower limits for 49 Near-Earth Asteroids (NEAs) were derived from optical light curves obtained at the 2.4-meter Hiltner telescope at the MDM Observatory. Each object was observed over approximately a 4-hour window with a typical minimum sampling interval of 90 to 100 seconds. Two codes were developed in order to debias the sample and to obtain the true fraction of Fast-Rotating Asteroids (FRAs). An FRA is observationally defined by our sensitivity limits to be a NEA with a period between 2 minutes and 2 hours. The first code simulates asteroids of various shapes and predicts their light curves. The second code uses the results from the observational program and the simulated light curves to obtain the probability density of the true fraction of FRAs. The observational and statistical analysis indicates that the population of asteroids with 20m
Cotto-Figueroa Desiree
Riethmiller D. A.
Statler Thomas S.
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