J/ApJ/789/151ivo://CDS.VizieR/J/ApJ/789/151doi:10.26093/cds/vizier.17890151CDSKim Y.Ishiguro M.Usui F.2017-04-24T11:58:12Z2017-03-22T14:05:47ZCDS support team

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

cds-question@unistra.frasteroidscometsWe investigated the population of asteroids in comet-like orbits using available asteroid size and albedo catalogs of data taken with the Infrared Astronomical Satellite, AKARI, and the Wide-field Infrared Survey Explorer on the basis of their orbital properties (i.e., the Tisserand parameter with respect to Jupiter, T_J_, and the aphelion distance, Q). We found that (1) there are 123 asteroids in comet-like orbits by our criteria (i.e., Q > 4.5 AU and T_J_< 3), (2) 80% of them have low albedo, p_v_< 0.1, consistent with comet nuclei, (3) the low-albedo objects among them have a size distribution shallower than that of active comet nuclei, that is, the power index of the cumulative size distribution is around 1.1, and (4) unexpectedly, a considerable number (i.e., 25 by our criteria) of asteroids in comet-like orbits have high albedo, p_v_> 0.1. We noticed that such high-albedo objects mostly consist of small (D < 3 km) bodies distributed in near-Earth space (with perihelion distance of q < 1.3 AU). We suggest that such high-albedo, small objects were susceptible to the Yarkovsky effect and drifted into comet-like orbits via chaotic resonances with planets.2014ApJ...789..151Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/789/151CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/astorb : Orbits of Minor Planets (Bowell+ 2014)J/PASJ/63/1117 : Asteroid catalog using AKARI (AcuA). V1. (Usui+, 2011)J/AJ/151/164 : Properties of asteroids in Karin cluster (Carruba+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/789/151https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/789/151http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/789/151https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/789/151https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/789/151http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/789/151GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJ/789/151/table1Asteroids in Comet-like Orbits in Infrared Asteroidal Survey CatalogseEccentricitysrc.orbital.eccentricityfloatNumberAsteroid numbermeta.idcharNameAsteroid namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDesigAsteroid provisional designationmeta.idcharaSemimajor axisAUphys.size.smajAxisfloatiInclinationdegsrc.orbital.inclinationfloatTJTisserand parameter with respect to Jupitersrc.orbitalfloatDDiameterkmphys.size.diameterfloate_DThe uncertainty in diameterkmstat.errorfloatpVGeometric albedophys.albedofloate_pVThe uncertainty in albedostat.errorfloatSourceObservation source (1)meta.bibchar