The evolution of the orbit of the Geminid meteor stream

Details The evolution of the orbit of the Geminid meteor stream The evolution of the orbit of the Geminid meteor stream

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.200..313f&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 200, July 1982, p. 313-324. Research supported by the Science and Engin

Astronomy and Astrophysics

Astronomy

54

Geminid Meteoroids, Gravitational Effects, Orbit Calculation, Orbit Perturbation, Planetary Gravitation, Aphelions, Meteoroid Showers, Orbital Elements, Orbital Mechanics, Perihelions, Periodic Variations, Time Dependence

Scientific paper

The Geminids were first reliably recorded in 1862. Observations of this stream over the last 118 years indicate that the ascending node is stationary at an Omega value of 261.38 + or - 0.11. A theoretical analysis of the effect of planetary induced gravitational perturbation on the stream results in a predicted decrease in the ascending node by 1.57 deg per century. The general rule that streams with inclinations greater than 90 deg have positive d Omega/dt values whereas streams with inclinations less than 90 deg have negative d Omega/dt is disobeyed by the Geminids. Various possible explanations for this discrepancy are discussed and one of these turns out to be very satisfactory.

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