Size-frequency disctibution of asteroids and craters and its implication to the origin of the lunar terminal cataclysm

2008 Fiscal Year Final Research Report

• Project/Area Number: 18540426
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Solid earth and planetary physics
• Research Institution: National Astronomical Observatory of Japan
• Principal Investigator: ITO Takashi National Astronomical Observatory of Japan, 天文データセンター, 助教授 (40280565)
• Co-Investigator(Kenkyū-buntansha): YOSHIDA Fumi 国立天文台, 国際連携室, 専門研究職員 (20399306) ; TAKEDA Takaaki 国立天文台, 天文シミュレーションプロジェクト, 専門研究職員 (70413961)
• Co-Investigator(Renkei-kenkyūsha): YOSHIDA Fumi 国立天文台, 国際連携室, 専門研究職員 (20399306) ; TAKEDA Takaaki 国立天文台, 天文シミュレーションプロジェクト, 専門研究職員 (70413961)
• Project Period (FY): 2006 – 2008
• Keywords: 固体惑星 / 衛星 / 小惑星 / クレーター

Research Abstract

小惑星は太陽系の進化に於いて常に中心的な役割を果たして来た天体である。その中でも地球に接近して衝突の可能性すらある天体は地球接近小惑星と呼ばれ、活発なサーベイ観測の対象となっている。本研究での各種の光学観測と数値シミュレーションの結果より、約40億年前に太陽系内部で発生したとされる後期隕石重爆撃期の衝突天体は地球接近小惑星であり、その力学起源は巨大惑星の動径方向の移動であることがだいぶ有力となった。

Research Products

• [Journal Article] Spin rates of fast-rotating asteroids and fragments in impact disruption (2009)
  • Author(s): T. Kadono, M. Arakawa, T. Ito, and K. Ohtsuki
  • Journal Title: Icarus 200 Pages: 694-697
  • Peer Reviewed
• [Journal Article] Quasi-Hilda comet 147P/Kushida-Muramatsu: Another long temporary satellite capture by Jupiter (2008)
  • Author(s): K. Ohtsuka, T. Ito, M. Yoshikawa, D. J. Asher, and H. Arakida
  • Journal Title: Astron. Astrophys. 489 Pages: 1355-1362
  • Peer Reviewed
• [Journal Article] A comparative study of size distributions for small L4 and L5 Jovian trojans (2008)
  • Author(s): F. Yoshida and T. Nakamura
  • Journal Title: Publ. Astron. Soc. Japan 60 Pages: 297-301
  • Peer Reviewed
• [Journal Article] A new surface density model of Jovian trojans around triangular libration points (2008)
  • Author(s): T. Nakamura and F. Yoshida
  • Journal Title: Publ. Astron. Soc. Japan 60 Pages: 293-296
  • Peer Reviewed
• [Journal Article] Searching satellites of asteroid Itokawa by imaging observation with Hayabusa spacecraft (2008)
  • Author(s): T. Fuse, F. Yoshida, D. Tholen, M. Ishiguro, J. Saito
  • Journal Title: Earth, Planet, Space 60 Pages: 33-37
  • Peer Reviewed
• [Journal Article] 大規模天文シミュレーションの可視化 - 国立天文台4D2Uプロジェクトでの試み (2008)
  • Author(s): 武田隆顕, 小久保英一郎, 林満, 岩下由美, 縣秀彦, 牧野淳一郎, 觀山正見, 加藤恒彦, 高幣俊之, 奥野光, 額谷宙彦, 三浦均
  • Journal Title: 可視化情報学会誌 28, No. 110 Pages: 186-192
  • Peer Reviewed
• [Journal Article] Trends in 20th century celestial mechanics (2007)
  • Author(s): T. Ito and K. Tanikawa
  • Journal Title: Publ. Natl. Astron. Obs. Japan 9 Pages: 55-122
  • Peer Reviewed
• [Journal Article] Color variation of a very young asteroid (2007)
  • Author(s): T. Ito and F. Yoshida
  • Journal Title: Karin. Publ. Astron. Soc. Japan 59 Pages: 269-275
  • Peer Reviewed
• [Journal Article] 第四紀の氷期サイクルと日射量変動 (2007)
  • Author(s): 伊藤孝士, 阿部彩子
  • Journal Title: 地学雑誌 116, No.6 Pages: 768-782
  • Peer Reviewed
• [Journal Article] Subsystems in a stable planetary system (2007)
  • Author(s): K. Tanikawa and T. Ito
  • Journal Title: Publ. Astron. Soc. Japan 59 Pages: 989-1004
  • Peer Reviewed
• [Journal Article] Apollo Asteroids (1566) Icarus and 2007 MK6: Icarus Family Members? (2007)
  • Author(s): K. Ohtsuka, H. Arakida, T. Ito, T. Kasuga, J. Watanabe, D. Kinoshita, T. Sekiguchi, D. J. Asher, and S. Nakano
  • Journal Title: Astrophys. J. 668 Pages: 71-74
  • Peer Reviewed
• [Journal Article] Subaru main belt asteroid survey (SMBAS) (2007)
  • Author(s): F. Yoshida and T. Nakamura
  • Journal Title: Planet. Space Sci. 55 Pages: 1113-1125
  • Peer Reviewed
• [Journal Article] Surface heterogeneity of 2005 UD from photometric observations (2007)
  • Author(s): D. Kinoshita, K. Ohtsuka, T. Sekiguchi, J. Watanabe, T. Ito, H. Arakida, T. Kasuga, S. Miyasaka, R. Nakamura, and H.-C. Lin
  • Journal Title: Astron. Astrophys. 466 Pages: 1153-1158
  • Peer Reviewed
• [Journal Article] Mass dispersal and angular momentum transfer during collisions between rubble-pile asteroids (2007)
  • Author(s): T. Takeda and K. Ohtsuki
  • Journal Title: Icarus 189 Pages: 256-273
  • Peer Reviewed
• [Journal Article] Dynamical transport of asteroid fragments from the nu6 resonance (2006)
  • Author(s): T. Ito and R. Malhotra
  • Journal Title: Advances in Space Research 38 Pages: 817-825
  • Peer Reviewed
• [Journal Article] Lightcurves of the Karin family asteroids (2006)
  • Author(s): T. Ito and F. Yoshida
  • Journal Title: Advances in Geosciences (World Scientific) vol. 3 Planetary Science Pages: 317-329
  • Peer Reviewed
• [Journal Article] Size distribution of asteroids and old terrestrial craters (2006)
  • Author(s): T. Ito, R. G. Strom, R. Malhotra, F. Yoshida, D. A. Kring
  • Journal Title: Advances in Geosciences (World Scientific) vol. 3 Planetary Science Pages: 337-343
  • Peer Reviewed
• [Journal Article] A new-born asteroid 832 Karin with old and new surfaces - SUBARU Spectroscopy (2006)
  • Author(s): S. Sasaki, T. Sasaki, J. Watanabe, F. Yoshida, H. Kawakita, N. Takato, B. Dermawan, T. Fuse, T. Ito, and T. Sekiguchi
  • Journal Title: Adv. Space. Res. 38, issue 9 Pages: 1995-1999
  • Peer Reviewed
• [Journal Article] Difference in degree of space weathering on newborn asteroid Karin (2006)
  • Author(s): T. Sasaki, S. Sasaki, J. Watanabe, T. Sekiguchi, F. Yoshida, T. Ito, H. Kawakita, T. Fuse, N. Takato, and B. Dermawan
  • Journal Title: Advances in Geosciences (World Scientific) vol. 3 Planetary Science (Anil Bhardwaj and Wing-Huen Ip, eds.) Pages: 331-336
  • Peer Reviewed
• [Journal Article] Apollo asteroid 2005 UD: split nucleus of (3200) Phaethon? (2006)
  • Author(s): K. Ohtsuka, T. Sekiguchi, D. Kinoshita, J. Watanabe, T. Ito, H. Arakida, and T. Kasuga
  • Journal Title: Astron. Astrophys. 450 Pages: 25-28
  • Peer Reviewed
• [Journal Article] Detailed images of asteroids 25143 Itokawa from Hayabusa (2006)
  • Author(s): J. Saito, F. Yoshida (14番目) ら著者全34名
  • Journal Title: Science 312 Pages: 1341-1344
  • Peer Reviewed
• [Journal Article] A mission called SAPPORO
  • Author(s): W.-H. Ip, F. Yoshida (7番目) ら著者全18名
  • Journal Title: Advances in Geosciences (World Scientific) vol. 3 Planetary Science Pages: 241-253
  • Peer Reviewed
• [Presentation] About the 4D2U Theater of the National Astronomical Observatory of Japan (2009)
  • Author(s): Takaaki Takeda
  • Organizer: International Symposium for Immersive Science Visualization, Preparatory Event 2009 futuring Full Dome & Stereoscopic Moves for The International Festival of Scientific Visualization
  • Place of Presentation: National Astronomical Observatory of Japan, Mitaka, Tokyo
  • Year and Date: 20090322-23
• [Presentation] Asymmetric cratering on the Moon and very slow NEAs, Subaru Users Meeting 2008 (2009)
  • Author(s): Takashi Ito
  • Organizer: National Astronomical Observatory of Japan
  • Place of Presentation: Mitaka, Tokyo, Japan
  • Year and Date: 20090114-16
• [Presentation] Asymmetric Impacts of the Near-Earth Asteroids on the Moon (2008)
  • Author(s): Takashi Ito
  • Organizer: Asteroids, Meteors, and Comets
  • Place of Presentation: Baltimore Marriott Waterfront, Baltimore, Maryland, USA
  • Year and Date: 20080713-18
• [Presentation] An insight into the solar system history through the size distribution of Jupiter's Trojans (2008)
  • Author(s): Fumi Yoshida
  • Organizer: Asteroids, Meteors, and Comets
  • Place of Presentation: Baltimore Marriott Waterfront, Baltimore, Maryland, USA
  • Year and Date: 20080713-18
• [Presentation] Asymmetric Impacts of the Near-Earth Asteroids on the Moon (2008)
  • Author(s): Takashi Ito
  • Organizer: Asia-Oceania Geoscience Society 5th Annual Meeting
  • Place of Presentation: Bexico, Busan, Korea
  • Year and Date: 20080616-20
• [Presentation] Size distributions and total populations of L4 and L5 Jovian trojans (2008)
  • Author(s): Fumi Yoshida
  • Organizer: Asia-Oceania Geoscience Society 5th Annual Meeting
  • Place of Presentation: Bexico, Busan, Korea
  • Year and Date: 20080616-20
• [Presentation] Boundary condition in collisional evolution given by size frequency distribution observation of astronoids (2008)
  • Author(s): Takashi Ito
  • Organizer: Subaru Users Meeting 2007 National Astronomical Observatory of Japan
  • Place of Presentation: Mitaka, Tokyo, Japan
  • Year and Date: 20080129-30
• [Presentation] Photometric observations of young asteroid families at Maidanak observatory in Uzbekistan (2007)
  • Author(s): Fumi Yoshida
  • Organizer: 7th East Asian Meeting on Astronomy - East Asian Network of Astronomy : Research, education and popularization
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 20071008-12
• [Presentation] Collision probability of asteroid fragments from the nu6 resonance (2007)
  • Author(s): Takashi Ito
  • Organizer: Asia-Oceania Geoscience Society 4th Annual Meeting Queen Sirikit National Convention Centre
  • Place of Presentation: Bangkok, Thailand
  • Year and Date: 20070730-0804
• [Presentation] Observations of Young Asteroid Families at Maidanak Observatory (2007)
  • Author(s): Fumi Yoshida
  • Organizer: Asia Oceania Geosciences Society 4th annual meeting
  • Place of Presentation: Bangkok
  • Year and Date: 20070730-0804
• [Presentation] Visualization of Astronomical Many-Particle Simulation Data in 4-Dimensional Digital Universe Project (4D2U Project) (2007)
  • Author(s): Takaaki Takeda
  • Organizer: DCAJ session, SIGGRAPH 2007
  • Place of Presentation: San Diego Convention Center, San Diego, California USA
  • Year and Date: 2007-08-07
• [Presentation] Dynamical transport of asteroid fragments from the nu6 resonance (2006)
  • Author(s): Takashi Ito
  • Organizer: Second East-Asia Numerical Astrophysics Meeting
  • Place of Presentation: KASI, Daejeon, Korea
  • Year and Date: 20061101-03
• [Presentation] Size distribution of asteroids and old terrestrial creaters: Implications for asteroidal dynamics during LHB (2006)
  • Author(s): Takashi Ito
  • Organizer: Asia-Oceania Geosciences Society 2nd Annual Meeting
  • Place of Presentation: Singapore
  • Year and Date: 20060620-25