Lunar gravity and geodesy mapping by KAGUYA and the origin of the lunar dichotomy

2010 Fiscal Year Self-evaluation Report

• Project/Area Number: 20244073
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Solid earth and planetary physics
• Research Institution: National Astronomical Observatory of Japan
• Principal Investigator: SASAKI Sho National Astronomical Observatory of Japan, RISE月探査プロジェクト, 教授 (10183823)
• Project Period (FY): 2008 – 2011
• Keywords: 月 / 重力 / 内部構造 / 二分性 / 地殻 / かぐや / 衝突盆地 / VLBIss

Research Abstract

「かぐや」の重力データを高精度にするため、JAXA,国立天文台や海外局の電波望遠鏡を使った衛星観測により軌道決定を行い、月の高精度重力データを取得する。そのために国立天文台の既存の計算機システムを使い、VLBIデータの相関処理を行い、衛星の位置を決定する。さらに「かぐや」搭載レーザ高度計により詳細地形データを取得する。この両者を合わせることで、これまでよりも精度がβ高いブーゲ重力異常分布を求め、月地殻厚さマップを作成する。内部構造の解析から月の二分性の起源を制約することを目標とする。

Research Products

• [Journal Article] Anomalous Moscoviense basin : Single oblique impact or double impact origin? (2011)
  • Author(s): Ishihara, Y., T.Morota, R.Nakamura, S.Goossens, S.Sasaki
  • Journal Title: Geophys.Res.Lett. 38巻 Pages: L03201
  • Peer Reviewed
• [Journal Article] Lunar gravity field determination using SELENE same-beam differential VLBI tracking data (2011)
  • Author(s): Goossens, S., Matsumoto, K., Liu, Q., Kikuchi, F., Sato, K., Hanada, H., Ishihara, Y., Noda, H., Kawano, N., Namiki, N., Iwata, T., Lemoine, F.G., Rowlands, D.D., Harada, Y., Chen, M.
  • Journal Title: J.Geodesy 85巻 Pages: 205-228
  • Peer Reviewed
• [Journal Article] Overview of differential VLBI observations of lunar orbiters in SELENE (Kaguya) for precise orbit determination and lunar gravity field study (2010)
  • Author(s): Hanada, H., Iwata, T., Liu, Q., Kikuchi, F., Matsumoto, K., Goossens, S., 28 others
  • Journal Title: Space Sci.Rev. 154巻 Pages: 123-144
  • Peer Reviewed
• [Journal Article] Ground compatibility tests for gravity measurement of SELENE : Accuracies of two- and four-way Doppler and range measurements (2010)
  • Author(s): Namiki, N., Iwata, T., Kawano, N., Fuke, F., Tateno, N., Asari, K., Noda, H., Kono, Y., Hanada, H., Yahagi, Y., Yamamoto, Z., Tanaka, K., Yamada, M., Matsumoto, K., Goossens, S.
  • Journal Title: Space Sci.Rev. 154巻 Pages: 130-121
  • Peer Reviewed
• [Presentation] Lunar South Pole-Aitken Basin from Kaguya (SELENE) Gravity/Topography (2011)
  • Author(s): Sasaki, S., et al.
  • Organizer: 42nd Lunar and Planetary Science Conference
  • Place of Presentation: ウッドランド、アメリカ
  • Year and Date: 2011-03-20
• [Presentation] The second version of the Lunar topographic data sets by KAGUYA-LALT (2011)
  • Author(s): Araki, H, et al.
  • Organizer: 5th KAGUYA (SELENE) Science Working Team (SWT-5) Meeting
  • Place of Presentation: 早稲田大学、東京
  • Year and Date: 2011-01-17
• [Presentation] Gravity/Topography Team, The first precise global gravity and topography of the Moon by KAGUYA (SELENE) mission (2010)
  • Author(s): Sasaki, S., KAGUYA
  • Organizer: 38th COSPAR General Assembly
  • Place of Presentation: ブレーメン国際会議場、ドイツ
  • Year and Date: 2010-07-20
• [Presentation] An improved lunar gravity field model using same-beam VLBI data (2010)
  • Author(s): Matsumoto, K., et al.
  • Organizer: 38th COSPAR General Assembly
  • Place of Presentation: ブレーメン国際会議場、ドイツ
  • Year and Date: 2010-07-20
• [Presentation] The First Accurate Global Gravity and Topography of the MOON by KAGUYA(SELENE) and Implication for Lunar Basin Evolution (2010)
  • Author(s): Sasaki, S., et al.
  • Organizer: AOGS2010
  • Place of Presentation: ハイデラバード、インド
  • Year and Date: 2010-07-07