火星の表面から観測されたフォボスとデイモスの日食
J F Bell1, M T Lemmon, T C Duxbury
1Cornell University, Ithaca, New York 14853-6801, USA. jfb8@cornell.edu
Nature
|July 8, 2005
まとめ
火星探査機SpiritとOpportunityは,太陽を通過するフォボスとデイモスの最初の直接画像を撮影しました. このデータは,火星の月軌道と火星の軌道に関する私たちの理解を洗練します.
科学分野:
- 惑星科学は惑星科学である.
- 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
- 軌道ダイナミクス 軌道ダイナミクス
背景:
- フォボスとデイモスは,低い傾きで火星を周回し,潜在的な太陽通過を可能にします.
- これらの衛星による太陽通過は,それらの軌道エフェメリドを精製することができます.
- フォボスは,火星内部における潮の消去による長期加速を示しており,長期の測定が必要である.
研究 の 目的:
- 火星の表面から太陽を通過するフォボスとデイモスの最初の直接的な画像観測を提示するために.
- トランジットデータを活用して,フォボスとデイモスの軌道エフェメリドを精製する.
- 火星内における潮の消散と,火星の衛星の軌道進化のよりよい理解に貢献するため.
主な方法:
- フォボスとデイモスが太陽円盤を横切った6回の通過を観測した.
- 火星探査ローバー"スピリット"と"オポチュニティ"に搭載されたカメラを利用した.
- 別の惑星の表面から直接撮影した画像.
主要な成果:
- 太陽を通過するフォボスとデイモスの直接画像を撮影しました.
- 6つの異なるトランジットイベントからデータを収集した.
- これらの観測は,火星の衛星を研究するための新しい方法を表しています.
結論:
- 惑星の表面から衛星の通過を直接撮影することは可能である.
- このテクニックは,火星の月のエフェメリドを精錬し,内部火星のプロセスを理解するための貴重なデータを提供します.
- 将来の観測は,火星システムの進化に関する私たちの知識をさらに高めることができます.
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