Long-term evolution of 1991 DA: A dynamically evolved extinct Halley-type comet

Details Long-term evolution of 1991 DA: A dynamically evolved extinct Halley-type comet Long-term evolution of 1991 DA: A dynamically evolved extinct Halley-type comet

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acm..proc..227h&link_type=abstract

In Lunar and Planetary Inst., Asteroids, Comets, Meteors 1991 p 227-230 (SEE N93-19113 06-90)

Mathematics

Dynamical Systems

2

Asteroids, Dynamical Systems, Eccentricity, Extinction, Halley'S Comet, Perihelions, Resonance, Crossings, Jupiter (Planet), Long Term Effects, Saturn (Planet)

Scientific paper

The long-term dynamical evolution of 21 variational orbits for the intermediate-period asteroid 1991 DA was followed for up to +/-105 years from the present. 1991 DA is close to the 2:7 resonance with Jupiter; it has avoided close encounters, within 1 AU, with this planet for at least the past 30,000 years, even at the node crossing. The future evolution typically shows no close encounters with Jupiter within at least 50,000 years. This corresponds to the mean time between node crossings with either Jupiter or Saturn. Close encounters with Saturn and Jupiter lead to a chaotic evolution for the whole ensemble, while secular perturbations cause large-amplitude swings in eccentricity and inclination (the latter covering the range 15 deg approximately less than i approximately less than 85 deg) which correlate with deep excursions of the perihelion distance to values much less than 1 AU. These variations are similar to those found in P/Machholz and a variety of other high-inclination orbits, e.g., P/Hartley-IRAS. We emphasize the connection between the orbital evolution of 1991 DA and that of Halley-type comets. If 1991 DA was once a comet, it is not surprising that it is now extinct.

Affiliated with

Also associated with

No associations

Rating

Long-term evolution of 1991 DA: A dynamically evolved extinct Halley-type comet does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Long-term evolution of 1991 DA: A dynamically evolved extinct Halley-type comet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long-term evolution of 1991 DA: A dynamically evolved extinct Halley-type comet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1112586