@inproceedings{oai:jaxa.repo.nii.ac.jp:00003059, author = {臼井, 文彦 and 長谷川, 直 and Muller, Thomas G. and 吉田, 二美 and 寺居, 剛 and 春日, 敏測 and Usui, Fumihiko and Hasegawa, Sunao and Muller, Thomas G. and Yoshida, Fumi and Terai, Tsuyoshi and Kasuga, Toshihiro}, book = {宇宙航空研究開発機構特別資料, JAXA Special Publication: Proceedings of the SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe}, month = {Mar}, note = {SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe (June 18-21, 2013. Ito Hall, the University of Tokyo), Bunkyou-ku, Tokyo, Japan, The physical properties of asteroids, including Main-belt asteroids (MBAs), Near-Earth asteroids (NEAs), Jovian Trojans (JTs), irregular satellites, are fundamental to understanding the formation of our solar system, since they are remnant of planetesimals and seem to preserve clues of the initial conditions of our solar nebula 4.6 Gyr ago. The size distribution of these small bodies is the most basic and useful tool to obtain an insight into their original mass and collisional history of our solar system. The radiometric method with the infrared space telescopes (e.g., IRAS, MSX, ISO, Spitzer, AKARI, WISE, and Herschel) can determine the size and albedo of asteroids. The sensitivity of SPICA is much higher than those of previous observations, especially in 20 μm or longer wavelength, and it can detect faint asteroids, for example, down to approximately 50 m MBAs. It is important to comprehend the population of such small asteroids also from standpoint of the “spaceguard”. Observations at far-infrared wavelengths will allow us to study Trans-Neptunian objects (TNOs) and Centaurs in the outer regions beyond the giant planets. Their size distribution, as well as bulk densities of binary systems, become as important key elements for the history of our solar system., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA1730027082, レポート番号: JAXA-SP-17-010E}, pages = {377--379}, publisher = {宇宙航空研究開発機構(JAXA), Japan Aerospace Exploration Agency (JAXA)}, title = {Mid-Infrared Asteroid Survey: From AKARI to SPICA}, volume = {JAXA-SP-17-010E}, year = {2018} }