Influence of the dynamic classification of asteroids on observation astrometric errors: a statistical analysis

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dc.contributor.authorStronati, Nicolo'
dc.contributor.authorFaggioli, Laura
dc.contributor.authorMicheli, M.
dc.contributor.authorCeccaroni, Marta
dc.date.accessioned2023-06-12T11:28:06Z
dc.date.available2023-06-12T11:28:06Z
dc.date.issued2023-03-24
dc.description.abstractThe ephemerides of minor planets are computed on the basis of astrometric observations. The asteroid orbit determination process requires these observations to be properly weighted to take into account the expected accuracy of the data. If not directly provided by the observers, the weights are, in general, computed after a station-specific statistical analysis on the observation residuals, where the influence of external factors such as epoch of observation, magnitude, and employed catalogue has been proven. In this paper, we perform a statistical analysis on observation residuals of the major surveys taking into account a new factor, i.e. the dynamical classification of asteroids, to understand whether the observation quality may have a dependence on the different type of observed object. If an influence is actually found, then it will be possible to develop a new weighting system based on these results. The weights will be easily applicable once one knows the asteroid orbit. In particular, four stations have been found having 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.en_UK
dc.identifier.citationStronati N, Faggioli L, Micheli M, Ceccaroni M. (2023) Influence of the dynamic classification of asteroids on observation astrometric errors: a statistical analysis, Monthly Notices of the Royal Astronomical Society, Volume 521, Issue 4, June 2023, pp. 5892-5903en_UK
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1093/mnras/stad901
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/19761
dc.language.isoenen_UK
dc.publisherOxford University Pressen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectasteroidsen_UK
dc.subjectastrometryen_UK
dc.subjectcataloguesen_UK
dc.subjectmethods: statisticalen_UK
dc.subjectsurveysen_UK
dc.titleInfluence of the dynamic classification of asteroids on observation astrometric errors: a statistical analysisen_UK
dc.typeArticleen_UK

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