An Observational Test for the Numerical Models of Motion of Two Periodic Comets

Details An Observational Test for the Numerical Models of Motion of Two Periodic Comets An Observational Test for the Numerical Models of Motion of Two Periodic Comets

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aca....45..429s&link_type=abstract

Acta Astronomica, v.45, pp.429-431, (1995).

Astronomy and Astrophysics

Astronomy

1

Comets: General, Comets: Individual: P/Grigg-Skjellerup: P/Kopff

Scientific paper

Numerical models of the nongravitational motion for two periodic comets, P/Grigg-Skjellerup and P/Kopff, were published by the author in 1991 and 1994. The models of motion, successfully linking all the apparitions of the comets, included nongravitational effects according to the Marsden's method based on the rotating and precessing cometary nucleus. Both comets were rediscovered during their new returns to the Sun. It is shown that the models of motion excellently represent the current comets' observations: the RMS residuals for several astrometric observations are less that 1 arcs and no systematic trends in the residuals are observed.

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