Bias correction factors for near-Earth asteroids

Details Bias correction factors for near-Earth asteroids Bias correction factors for near-Earth asteroids

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acm..proc...65b&link_type=abstract

In Lunar and Planetary Inst., Asteroids, Comets, Meteors 1991 p 65-68 (SEE N93-19113 06-90)

Astronomy and Astrophysics

Astronomy

2

Albedo, Asteroids, Astronomical Models, Bias, Computer Programs, Computerized Simulation, Density Distribution, Error Correcting Codes, Mathematical Models, Orbital Elements, Physical Properties, Populations, Declination, Field Of View, Rotation, Telescopes

Scientific paper

Knowledge of the population size and physical characteristics (albedo, size, and rotation rate) of near-Earth asteroids (NEA's) is biased by observational selection effects which are functions of the population's intrinsic properties and the size of the telescope, detector sensitivity, and search strategy used. The NEA population is modeled in terms of orbital and physical elements: a, e, i, omega, Omega, M, albedo, and diameter, and an asteroid search program is simulated using actual telescope pointings of right ascension, declination, date, and time. The position of each object in the model population is calculated at the date and time of each telescope pointing. The program tests to see if that object is within the field of view (FOV = 8.75 degrees) of the telescope and above the limiting magnitude (V = +1.65) of the film. The effect of the starting population on the outcome of the simulation's discoveries is compared to the actual discoveries in order to define a most probable starting population.

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