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Science 23 November 2001:
Vol. 294. no. 5547, pp. 1691 - 1693
DOI: 10.1126/science.1065318
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Reports

A Near-Earth Asteroid Population Estimate from the LINEAR Survey

Joseph Scott Stuart

I estimate the size and shape of the near-Earth asteroid (NEA) population using survey data from the Lincoln Near-Earth Asteroid Research (LINEAR) project, covering 375,000 square degrees of sky and including more than 1300 NEA detections. A simulation of detection probabilities for different values of orbital parameters and sizes combined with the detection statistics in a Bayesian framework provides a correction for observational bias and yields the NEA population distribution as a function of absolute magnitude, semi-major axis, eccentricity, and inclination. The NEA population is more highly inclined than previously estimated, and the total number of kilometer-sized NEAs is 1227-90+170 (1sigma ).

Massachusetts Institute of Technology Lincoln Laboratory, 244 Wood Street, Room S4-571, Lexington, MA 02421, USA. E-mail: stuart{at}ll.mit.edu

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Science. ISSN 0036-8075 (print), 1095-9203 (online)