Properties of asteroids in comet-like orbits Virtual Observatory Resource

Authors
  1. Kim Y.
  2. Ishiguro M.
  3. Usui F.
  4. Published by
    CDS
Abstract

We 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.

Keywords
  1. asteroids
  2. comets
Bibliographic source Bibcode
2014ApJ...789..151K
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/789/151
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/789/151
Document Object Identifer DOI
doi:10.26093/cds/vizier.17890151

Access

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http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/789/151
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History

2017-03-22T14:05:47Z
Resource record created
2017-03-22T14:05:47Z
Created
2017-04-24T11:58:12Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
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cds-question@unistra.fr