Mathematics – Probability
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987icar...72..304b&link_type=abstract
Icarus (ISSN 0019-1035), vol. 72, Nov. 1987, p. 304-324.
Mathematics
Probability
113
Asteroids, Classifications, Albedo, Multivariate Statistical Analysis, Asteroids, Classification, Procedure, Statistical Analysis, Photometry, Satellite Observations, Iras Satellite, Albedo, Comparisons, Spectroscopy, Optical Properties, Radiometry, Spectra, Wavelengths, Color, Catalog, Diagrams, Calculations, Analysis
Scientific paper
A revised version of the G-mode multivariate statistics has been used to classify the 438 asteroids for which the eight-color photometric data and IRAS albedo are available. At a confidence level of 99.7%, seven taxonomic units of asteroids are separated by the method, while with higher values of the confidence level no separation occurs in the adopted sample. Decreasing the confidence level (i.e., accepting a higher probability of a wrong decision in classifying the asteroids), the authors obtain a more detailed grouping, which results in a successive subdivision of the first units found. At a confidence level of 97.5%, two groups are added to the original ones: C asteroids are in fact subdivided on the basis of their albedo into three different units. In total, 18 groups of objects can be distinguished.
Barucci Maria-Antonella
Capria Maria Teresa
Coradini Angioletta
Fulchignoni Marcello
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