| タイトル | Asteroid flux and impact cratering rate on Venus |
| 本文（外部サイト） | http://hdl.handle.net/2060/19920001662 |
| 著者（英） | Shoemaker, C. S.; Wolfe, R. F.; Shoemaker, E. M. |
| 著者所属（英） | Geological Survey |
| 発行日 | 1991-06-01 |
| 言語 | eng |
| 内容記述 | By the end of 1990, 65 Venus-crossing asteroids were recognized; these represent 59 percent of the known Earth-crossing asteroids. Further studies, chiefly numerical integrations of orbit evolution, may reveal one or two more Venus crossers among the set of discovered asteroids. A Venus crosser was defined as an asteroid whose orbit can intersect the orbit of Venus as a result of secular (long range) perturbations. Venus crossers revolving on orbits that currently overlap the orbit of Venus are called Venapol asteroids, and those on orbit that don't overlap are called Venamor asteroids; 42 Venapols and 23 Venamors were recognized. Collision probabilities with Venus for 60 of the known Venus crossers were determined. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 92N10880 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/130391 |
