Estimation of nongravitational forces acting on cometary nuclei

Details Estimation of nongravitational forces acting on cometary nuclei Estimation of nongravitational forces acting on cometary nuclei

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986doukr.......57p&link_type=abstract

Akademiia Nauk Ukrains'koi RSR, Dopovidi, Seriia A Fiziko-Matematichni ta Tekhnichni Nauki (ISSN 0002-3531), June 1986, p. 57-60

Astronomy and Astrophysics

Astronomy

Astronomical Models, Comet Nuclei, Conductive Heat Transfer, Force Distribution, Ice, Thermodynamic Properties

Scientific paper

A thermal model of a cometary nucleus is developed on the basis of a numerical-analytical solution to a stationary heat conduction equation for a cometary nucleus consisting of ice. The model allows for the thermal radiation of the heated nucleus surface, rotation of the nucleus around its axis and in orbit around the sun, and ice sublimation. By analyzing the dependence of the nongravitational force and its direction on the heliocentric distance of the comet, an evaluation is made of the effect of the surface albedo, thermophysical characteristics of ice, and the rotation period on the nongravitational force.

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