Applicability of meteor radiant determination methods depending on orbit type

Details Applicability of meteor radiant determination methods depending on orbit type Applicability of meteor radiant determination methods depending on orbit type

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994p%26ss...42..669n&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 42, no. 8, p. 669-672

Statistics

Computation

3

Computational Astrophysics, Radiancy, Stellar Orbits, Mathematical Models, Perihelions, Velocity Distribution

Scientific paper

In the present paper an anlysis of calculating meteor radiants this problem is presented, together with recommended methods for various types of orbits. Some additional methods resulting from mathematical modelling are presented and discussed together with Porter's, Steel-Baggaley's and Hasegawa's methods. In order to be able to compare how suitable the application of the individual radiant determination methods is, it is necessary to determine the accuracy with which they approximate real meteor orbits. To verify the accuracy with which the orbit of a meteoroid with at least one node at 1 AU fits the original orbit of the parent body, we applied the Southworth-Hawkins D-criterion. D is less than or equal to 0.1 indicates a very good fit of orbits, 0.1 is less than D is less than or equal to 0.2 is considered to be a good fit of orbits, and D is greater than 0.2 the fit is rather poor and the change of orbit unrealistic. The optimal methods with the smallest values of D for given types of orbits are shown in three plots. The new method of rotation around the line of apsides we propose is very appropiate in the region of small inclinations. Hasegawa omega-adjustment method.

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