J/AJ/167/163ivo://CDS.VizieR/J/AJ/167/163doi:10.26093/cds/vizier.51670163CDSNavarro-Meza S.Trilling D.E.Mommert M.Butler N.Reyes-Ruiz M.2026-07-02T11:44:45Z2024-06-05T06:26:17ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsolar-systemasteroidsinfrared-photometryvisible-astronomyWe present results from observations of 238 near-Earth objects (NEOs) obtained with the RATIR instrument on the 1.5m robotic telescope at San Pedro Martir's National Observatory in Mexico, in the frame of our multiobservatory, multifilter campaign. Our project is focused on rapid response photometric observations of NEOs with absolute magnitudes in the range 18.1-27.1 (diameter~600 and 10m, respectively). Data with coverage in the near-infrared and visible range were analyzed with a nonparametric classification algorithm, while visible-only data were independently analyzed via Monte Carlo simulations and a 1-Nearest Neighbor method. The rapid response and the use of spectrophotometry allows us to obtain taxonomic classifications of subkilometer objects with small telescopes, representing a convenient characterization strategy. We present taxonomic classifications of the 87 objects observed in the visible and near-infrared. We also present the taxonomic distribution of an additional 151 objects observed in the visible. Our most accurate method suggests a nonfeatured-to-featured ratio of ~0.75, which is consistent with the value found by the Mission Accessible Near-Earth Object Survey, which conducted a similar study using a spectral analysis. The results from the Monte Carlo method suggest a ratio of ~0.8, although this method has some limitations. The 1-Nearest Neighbor method showed to be not suitable for NEO classifications.2024AJ....167..163Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/167/163CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AJ/154/162 : KMTNet-SAAO observation of nearEarth asteroids (Erasmus+, 2017)J/AJ/158/196 : Near-Earth Object Survey (MANOS) spectroscopy (Devogele+, 2019)J/ApJS/247/13 : ATLAS c-o colors & classification of asteroids (Erasmus+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/167/163https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/167/163http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/167/163https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/167/163https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/167/163http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/167/163GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/167/163/table4Observed targets analized with k-NN and a probability of belonging to a taxonomy larger than 50%recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDObject identifiermeta.id;meta.maincharDateMidtime of the observation; YYYY-MM-DD hh:mmtime.epochcharDurObservation durationhtime.duration;obsfloatVMAGAbsolute magnitudemagphys.magAbsfloatP(C+X)? Probability belonging to non-featured C and X typestat.fit.goodnessintnullableP(Q)? Probability belonging to unweathered rocky Q typestat.fit.goodnessintnullableP(S)? Probability of belonging to rocky S typestat.fit.goodnessintnullableP(D)? Probability of belonging to D typestat.fit.goodnessintnullableP(V)? Probability of belonging to V typestat.fit.goodnessintnullableSets[1/3] Set where this object belongs tometa.idintJ/AJ/167/163/table5Equivalent to Table 4 for the objects which probability of belonging to a given taxonomy is less than 50%IDObject identifiermeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateMidtime of the observation; YYYY-MM-DD hh:mmtime.epochcharDurObservation durationhtime.duration;obsfloatVMAGAbsolute magnitudemagphys.magAbsfloatP(C+X)? Probability belonging to non-featured C and X typestat.fit.goodnessintnullableP(Q)? Probability belonging to unweathered rocky Q typestat.fit.goodnessintnullableP(S)? Probability of belonging to rocky S typestat.fit.goodnessintnullableP(D)? Probability of belonging to D typestat.fit.goodnessintnullableP(V)? Probability of belonging to V typestat.fit.goodnessintnullableSets[1/3] Set where this object belongs tometa.idint