Evolution of comets into asteroids.
Abstract
Observational discoveries and theoretical developments in the past decade have led to a general consensus that at least some asteroids, in particular some Earth-crossing asteroids, may actually be extinct cometary nuclei. Extinct nuclei may resemble primitive asteroid types such as C, P and D. Current best dynamical estimates are that somewhat less than half the Apollo and Aten asteroids may be extinct cometary nuclei, though the uncertainty of that estimate is quite large. Further detailed physical studies of the Apollos, Atens and other unusual asteroids are clearly needed to help resolve these issues.
- Publication:
-
Asteroids II
- Pub Date:
- 1989
- Bibcode:
- 1989aste.conf..880W
- Keywords:
-
- Apollo Asteroids;
- Comet Nuclei;
- Oort Cloud;
- Planetary Crusts;
- Planetary Evolution;
- Dynamic Characteristics;
- Halley'S Comet;
- Planetary Orbits;
- Planetary Surfaces;
- Lunar and Planetary Exploration;
- Comets: Evolution;
- Minor Planets: Parent Bodies