Asteroid catalog using AKARI: AKARI/IRC mid-infrared asteroid survey

Fumihiko Usui, Daisuke Kuroda, Thomas G. Müller, Sunao Hasegawa, Masateru Ishiguro, Takafumi Ootsubo, Daisuke Ishihara, Hirokazu Kataza, Satoshi Takita, Shinki Oyabu, Munetaka Ueno, Hideo Matsuhara, Takashi Onaka

Research output: Contribution to journalArticlepeer-review

129 Citations (Scopus)

Abstract

We present the results of an unbiased asteroid survey in the mid-infrared wavelength region with the Infrared Camera (IRC) on board the Japanese infrared satellite AKARI. About 20% of the point source events recorded in the AKARI All-Sky Survey observations are not used for the IRC Point Source Catalog (IRC-PSC) in its production process because of a lack of multiple detection by position. Asteroids, which are moving objects on the celestial sphere, remain in these "residual events". We identify asteroids out of the residual events by matching them with the positions of known asteroids. For the identified asteroids, we calculate the size and albedo based on the Standard Thermal Model. Finally we have a new brand of asteroid catalog, named the Asteroid Catalog Using AKARI (AcuA), which contains 5120 objects, about twice as many as the IRAS asteroid catalog. The catalog objects comprise 4953 main belt asteroids, 58 near-Earth asteroids, and 109 Jovian Trojan asteroids. The catalog is publicly available via the Internet.

Original languageEnglish
Pages (from-to)1117-1138
Number of pages22
JournalPublications of the Astronomical Society of Japan
Volume63
Issue number5
DOIs
Publication statusPublished - 2011 Oct 25
Externally publishedYes

Keywords

  • Asteroids
  • Catalogs
  • Infrared: Solar system
  • Minor planets
  • Space vehicles: Instruments
  • Surveys

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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