Statistics – Computation
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..284n&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.284
Statistics
Computation
Scientific paper
NEOSSat (Near-Earth Object Surveillance Satellite), scheduled to launch in early 2012, will be Canada's next space telescope. Its scientific objective is to search for and track Near Earth Objects (NEOs) to determine their orbital parameters, in particular targeting NEOs with semi-major axes smaller than Earth's. In order to optimize NEOSSat's ability to carry out this goal, a new NEO orbital distribution model was calculated using over 300 core-years of computation. This model greatly improves the resolution and statistics of the previous orbital model from a decade ago (Bottke et al. 2002, [1]). The inclusion of Mercury and the use of a smaller time-step result in improved accuracy for orbits in NEOSSat's main search region (i.e. semimajor axes less than 1 AU) as well as an improved asteroid impact-speed distribution for terrestrial planets, especially Mercury. In addition, two new near-Earth asteroid (NEA) populations appearing in our model are (1) NEAs that orbit completely interior to Venus and (2) NEAs in retrograde orbits.
Gladman Brett
Greenstreet Sarah
Ngo Henry
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