
Accession Number : AD0690736
Title : ASTRONOMICAL INFORMATION OF METEORITE ORBITS (45),
Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO)
Personal Author(s) : Millman,Peter M.
Report Date : 1968
Pagination or Media Count : 12
Abstract : Knowledge of the orbit of any given meteorite can only be acquired through an analysis of the data relating to the associated fireball. For a point near the start of the fireball trajectory the required parameters are: geographic latitude and longitude, time and date, radiant elevation and azimuth, velocity relative to the earth. One must, in general, rely on observational data from the casual observer, since the time and place of the arrival of meteorites cannot be predicted. Hence, the information available is normally of low accuracy. The above observational parameters are listed roughly in order of increasing percentage error, the velocity almost always being in greatest doubt. In attempting to arrive at the true picture of the complex of meteorite orbits, computer programming is of great assistance. A multipletrial system can be used, both to derive the best mean value from many widely divergent original observations, and to demonstrate the groups of orbits which result from various arbitrary choices of the orbital elements. (Author)
Descriptors : (*METEORITES, ORBITS), ATMOSPHERE ENTRY, ASTRONOMY, ELLIPTICAL ORBIT TRAJECTORIES, MATHEMATICAL ANALYSIS
Subject Categories : Celestial Mechanics
Distribution Statement : APPROVED FOR PUBLIC RELEASE