マリナー9号の天体力学実験:火星の重力場と極の方向
Science (New York, N.Y.)
|January 21, 1972
まとめ
マリナー9号のデータによると,火星の重力場は地球や月よりも強い. 惑星の自転軸の方向も約0.5度誤っていることが判明しました.
科学分野:
- 惑星科学は惑星科学である.
- 地質物理学 地質物理学とは地質物理学です.
- 天文学 (astronomy) 天文学 (astronomy) とは,天文学 (astronomy) とは,天文学 (astronomy) とは,天文学 (astronomy) とは
背景:
- 火星の重力場と自転軸を理解することは,惑星科学にとって極めて重要です.
- 以前の分析では,これらのパラメータの解像度が限られていた.
研究 の 目的:
- マリナー9のデータを用いて,火星の重力場と自転軸の理解を洗練する.
- 主要な重力係数と極方向の更新された値を提供するために.
主な方法:
- マリナー9号からの無線追跡データ分析.
- 火星の重力場に対する低次元の調和係数の計算.
- 火星回転軸の方向を決定する.
主要な成果:
- 火星の重力場は,地球や月のそれよりもかなり粗いです.
- 火星の回転軸の受け入れられた方向は,約0.5度の誤差があることが判明しました.
- 重力係数J(2),C(22),S(22) の新しい値が決定され,J(2) は以前のフォボスの観測値と一致した.
結論:
- この研究は,火星の重力場と自転軸のより正確なモデルを提供します.
- これらの発見は,火星の内部構造とダイナミクスの理解を深める.
- この結果は,将来のミッションや火星の地形の解釈に影響を及ぼします.
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