Study of lunar and planetary internal structure by inverse VLBI

2012 Fiscal Year Final Research Report

• Project/Area Number: 22540441
• 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: MATSUMOTO Koji 国立天文台, RISE月惑星探査検討室, 准教授 (30332167)
• Co-Investigator(Renkei-kenkyūsha): HANADA Hideo 国立天文台, RISE月惑星探査検討室, 准教授 (60132677) ; KIKUCHI Fuyuhiko 国立天文台, RISE月惑星探査検討室, 専門研究職員 (30465926) ; ARAKI Hiroshi 国立天文台, RISE月惑星探査検討室, 助教 (10290884) ; NODA Hirotomo 国立天文台, RISE月惑星探査検討室, 助教 (10353426) ; SASAKI Sho 国立天文台, RISE月惑星探査検討室, 教授 (10183823)
• Project Period (FY): 2010 – 2012
• Keywords: 月内部構造 / 重力場 / 潮汐ラブ数 / VLBI / 惑星回転

Research Abstract

Bearing future lunar explorations in mind, we modified orbitand gravity estimation software GEODYN II so that it can handle with inverse VLBIobservation. We estimated through a numerical simulation the accuracy of tidal Lovenumber k2 which is anticipated for the future lunar mission. We developed softwareto estimate the internal structure of the Moon by combining selenodetically observedparameters such as tidal Love numbers and Apollo seismic data. We studied antennasystem which is durable on the lunar surface environment. A mission concept was alsostudied for estimating the rotation of the Mars from satellite-to-satellite trackingdata between a Martian orbiter and a lander

Research Products

• [Journal Article] Measurements of Martian Rotational Variations by Space Geodetic Techniques (2012)
  • Author(s): Iwata, T., K. Matsumoto, Y. Ishihara, F. Kikuchi, Y. Harada and S. Sasaki
  • Journal Title: Trans. JSASS Aerospace Tech. Japan Volume: Vol. 10, No. ists28 Pages: 25-29
  • DOI: 10.2322/tastj.10.Pk_25
  • Peer Reviewed
• [Journal Article] Lunar Gravity and Rotation Measurements by Japanese Lunar Landing Missions (2012)
  • Author(s): Sasaki, S., H. Hanada, H. Noda, F. Kikuchi, H. Araki, K. Matsumoto, H. Kunimori, T. Iwata, S. Goossens, T. Otsubo and K. Funazaki,
  • Journal Title: Trans. JSASS Aerospace Tech Volume: Vol. 10, No. ists28 Pages: 33-36
  • DOI: 10.2322/tastj.10.Tk_33
  • Peer Reviewed
• [Presentation] Contribution of SELENE-2 geodetic measurements to constrain the lunar internal structure (2012)
  • Author(s): Matsumoto, K
  • Organizer: American Geophysical Union Fall Meeting 2012
  • Place of Presentation: Moscone Center(サンフランシスコ、アメリカ合衆国)
  • Year and Date: 2012-12-29
• [Presentation] 、SELENE-2/VLBI ミッションによる月内部構造制約 (2012)
  • Author(s): 松本晃治
  • Organizer: 日本地球惑星科学連合2012年大会
  • Place of Presentation: 幕張メッセ
  • Year and Date: 2012-05-25
• [Presentation] VLBI radio sources on a lander and an orbiter for study of lunar internal structure proposed for SELENE-2 mission (2011)
  • Author(s): Matsumoto, K.
  • Organizer: European Geosciences Union General Assembly 2011
  • Place of Presentation: Austria Center Vienna(ウィーン、オーストリア)
  • Year and Date: 2011-04-08