Solar system and small-field astrometry

Understand

Astrometric issues for solar system studies are discussed.

• An overview gives references and cover all aspects of the solar system where astrometry is important: orbits of planets, moons, asteroids and NEOs, masses of asteroids, occultations of asteroids and KBOs, and families of asteroids and KBOs.
• The roles of astrometry from the ground, from Gaia and from a Gaia successor are discussed, but not small-field astrometry from space.
• It appears from work with CCD cameras at the 1.55 m astrometric reflector in Flagstaff that an accuracy of 1 mas is the best possible from the ground during one night observing when using ordinary telescopes, i.e.