Speaker
Description
Astrometric observations weights, usually computed after a station-specific statistical analysis on the observation residuals, quantify the expected accuracy of data.
The influence on observations weights of external factors such as epoch of observation, magnitude, and employed catalogue has already been proven in the literature.
This work analyses observation residuals of the major surveys accounting for the dynamical classification of asteroids, to understand whether the observation quality may have a dependence on the different type of observed object to develop a more accurate weighting system. The work identifies four stations with different qualities depending on whether they are observing near-Earth asteroids or main-belt asteroids. Moreover, the cross-correlation between the dynamic classification and epoch, magnitude, and catalogue is investigated, as well as the influence of these factors on observations’ quality.
