Estimates of masses, volumes and densities of short-period comet nuclei

Details Estimates of masses, volumes and densities of short-period comet nuclei Estimates of masses, volumes and densities of short-period comet nuclei

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987esasp.278..471r&link_type=abstract

In ESA, Proceedings of the International Symposium on the Diversity and Similarity of Comets p 471-481 (SEE N88-21884 14-91)

Statistics

39

Comet Nuclei, Density Measurement, Mass Distribution, Volume, Halley'S Comet, Light Curve, Outgassing, Parameterization, Porosity, Statistical Analysis

Scientific paper

Masses of 29 short-period comets are estimated. By comparing nongravitational parameters with the jet forces expected from the gas production curves, an allowed mass range is calculated for each comet. The gas production curves were calculated from the visual light curves using Festou's correlation. These curves also give free-sublimating areas and by assuming a reasonable dust coverage the volumes and densities can be estimated, based on the statistics of nongravitational parameters as a function of dynamical age. Nothing definite can be said about the densities of individuals comets, except for P/Halley, but the approach leads to a statistical picture which supports the idea of cometary nuclei as highly porous objects.

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