The visual albedo information resolves the spectral degeneracy of the X-complex and establishes the P-class as part of the C-complex. We identify 17 classes split into the three complexes C, M, and S, including the new Z-class for extremely-red objects in the main belt. The asteroid classes are identified in a lower-dimensional representation of the observations using a mixture of common factor analysers model. We built the taxonomy based on 2983 observations of 2125 individual asteroids, representing an almost tenfold increase of sample size compared with the previous taxonomy. The resulting class assignments are given probabilistically, enabling the uncertainty of a classification to be quantified. visible, near-infrared, and visible-near-infrared spectrometry) and which reintroduces the visual albedo into the classification observables. We developed an iteration of the asteroid taxonomy which allows the classification of partial and complete observations (i.e. While prior iterations followed either the availability of large observational campaigns or new instrumental capabilities opening new observational dimensions, we see the opportunity to improve primarily upon the established methodology.Īims. The classification of the minor bodies of the Solar System based on observables has been continuously developed and iterated over the past 40 yr. Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS,Į-mail: Côte d’Azur, Inria, Maasai project-team, Laboratoire J.A. Astronomical objects: linking to databases.Including author names using non-Roman alphabets.Suggested resources for more tips on language editing in the sciences Punctuation and style concerns regarding equations, figures, tables, and footnotes
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