Cosmodice: dynamical investigation of cometary evolution.
Abstract
The authors calculated by numerical integration the orbital evolution of about 160 periodic comets for 3400 years and 1000 years toward the past and the future respectively. Planetary positions taken from the JPL planetary ephemeris DE102 are incorporated in the integration. The accuracy of each orbital calculation is estimated using the roundtrip error in a closure test, and a measure of the reliable time interval is given for each calculated orbit. The time history of Kepler elements, perihelion distance and Tisserand's invariant is shown graphically for each comet. It is found that the majority of comets with Tisserand's constants between 2.8 and 3.1 evolve within 1 ≡ 2 thousand years from orbits with perihelia near the Jovian orbit to orbits with perihelia of 1 ≡ 2 AU. The results of these calculations are also available on magnetic tape (FITS format).
 Publication:

Publications of the National Astronomical Observatory of Japan
 Pub Date:
 1991
 Bibcode:
 1991PNAOJ...2..293N
 Keywords:

 Comets;
 Evolution (Development);
 Numerical Integration;
 Orbit Calculation;
 Dynamic Models;
 Error Analysis;
 Kepler Laws;
 Solar Orbits;
 Astronomy