Asteroid Astrometry Accuracy

Details Asteroid Astrometry Accuracy Asteroid Astrometry Accuracy

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21715606h&link_type=abstract

American Astronomical Society, AAS Meeting #217, #156.06; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

Predictions of asteroid (or comet) positions depend on the accuracy of their orbits, and in turn on the history and quality of their measured postitions as they move around the sky. Currently the error of a single observation is limited by catalog errors of 50 mas, even with the best available catalogs such as Tycho or UCAC. We discuss errors in catalogs, asteroid orbits, and predicted positions for bright asteroids (V < 17), including the 6000 asteroids being monitored by the Flagstaff Astrometric Scanning Transit Telescope. For purposes of predicting occultations, it is desirable to improve asteroid orbits and the positions of the occulted stars. We discuss an experiment to greatly reduce the error of their relative positions, and improve the predicted occultation path.
This work received funding from NASA NNH08AI17I.

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