skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Physical properties of asteroids in comet-like orbits in infrared asteroid survey catalogs

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{sub 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{sub J} < 3), (2) 80% of them have low albedo, p{sub 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{sub 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.

Authors:
;  [1];  [2]
  1. Department of Physics and Astronomy, Seoul National University, Gwanak, Seoul 151-742 (Korea, Republic of)
  2. Department of Astronomy, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)
Publication Date:
OSTI Identifier:
22365687
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 789; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTEROIDS; CATALOGS; CHAOS THEORY; COMETS; DISTRIBUTION; GALAXY NUCLEI; INFRARED SURVEYS; JUPITER PLANET; ORBITS; PHYSICAL PROPERTIES; RESONANCE; SATELLITES; SPACE

Citation Formats

Kim, Yoonyoung, Ishiguro, Masateru, and Usui, Fumihiko. Physical properties of asteroids in comet-like orbits in infrared asteroid survey catalogs. United States: N. p., 2014. Web. doi:10.1088/0004-637X/789/2/151.
Kim, Yoonyoung, Ishiguro, Masateru, & Usui, Fumihiko. Physical properties of asteroids in comet-like orbits in infrared asteroid survey catalogs. United States. doi:10.1088/0004-637X/789/2/151.
Kim, Yoonyoung, Ishiguro, Masateru, and Usui, Fumihiko. Thu . "Physical properties of asteroids in comet-like orbits in infrared asteroid survey catalogs". United States. doi:10.1088/0004-637X/789/2/151.
@article{osti_22365687,
title = {Physical properties of asteroids in comet-like orbits in infrared asteroid survey catalogs},
author = {Kim, Yoonyoung and Ishiguro, Masateru and Usui, Fumihiko},
abstractNote = {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{sub 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{sub J} < 3), (2) 80% of them have low albedo, p{sub 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{sub 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.},
doi = {10.1088/0004-637X/789/2/151},
journal = {Astrophysical Journal},
number = 2,
volume = 789,
place = {United States},
year = {Thu Jul 10 00:00:00 EDT 2014},
month = {Thu Jul 10 00:00:00 EDT 2014}
}