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On the Deflection of the Orbits of Earth Colliding Asteroids
https://naragakuen.repo.nii.ac.jp/records/484
https://naragakuen.repo.nii.ac.jp/records/4848d898431-1a7e-441a-bf6a-c68190cfa503
名前 / ファイル | ライセンス | アクション |
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本文PDF (203.1 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2016-08-26 | |||||
タイトル | ||||||
タイトル | On the Deflection of the Orbits of Earth Colliding Asteroids | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | On the Deflection of the Orbits of Earth Colliding Asteroids | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | asteroids-collision with earth-orbit deflection. | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | asteroids-collision with earth-orbit deflection. | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
藪下, 信
× 藪下, 信× Komori, Seiji× Yabushita, Shin× Komori, Seiji |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | An investigation is made of the orbital deflection of an asteroid for a collision with the Earth to be avoided. A set of equations are derived which describe the separation between the original and deflected orbits and the equations are integrated from perihelion where a velocity change is given in the direction of the orbital motion. For a predicted collision to be avoided, the separation ought to be greater than the Earth radius at the time when the asteroid crosses the Earth' orbit. It is found that if the lead time from perihelion is denoted by t measured in years, the required velocity change is 0.22(t/10)-1 cm/sec for a (semi-major axis) =2 AU and 0.17(t/10)-1 cm/sec for a=3 AU for eccentricities greater than 0.7. These values are somewhat less than the estimates obtained in earlier investigations. |
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書誌情報 |
情報学フォーラム en : Information Science Forum 巻 1, p. 1-7, 発行日 2002 |
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出版者 | ||||||
出版者 | 奈良産業大学情報学部 |