Masses and Densities of Asteroids
Abstract
Ceres, Pallas, and Vesta allow a determination of mass from gravitational effects in the motion of another asteroid. An extended and partly corrected set of observations of 197 Arete leads to an increase of 15% in the resulting mass of Vesta that was first determined by Hertz. Other possibilities of mass determination and estimates of the total mass of asteroids are mentioned. The available diameter determinations and adopt preferred values are reviewed. The densities for Ceres, Pallas, and Vesta are respectively 2.3 plus or minus 1.1 g/cu cm, 2.6 plus or minus 0.9 g/cu cm and 3.3 plus or minus 1.5 g/cu cm.
- Publication:
-
Asteroids
- Pub Date:
- 1979
- Bibcode:
- 1979aste.book...84S
- Keywords:
-
- Asteroids;
- Astrometry;
- Gravitational Effects;
- Planetary Mass;
- Planetology;
- Density Measurement;
- Dimensional Measurement;
- Planetary Orbits;
- Polarimetry;
- Radiometers;
- Solar System;
- Stellar Occultation;
- Lunar and Planetary Exploration