| タイトル | Use of libration-point orbits for space observatories |
| 著者（英） | Farquhar, Robert W.; Dunham, David W. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1990-01-01
1990 |
| 言語 | eng |
| 内容記述 | The sun-earth libration points, L1 and L2, are located 1.5 million kilometers from the earth toward and away from the sun. Halo orbits about these points have significant advantages for space observatories in terms of viewing geometry, thermal and radiation environment, and delta-V expediture. |
| NASA分類 | ASTRODYNAMICS |
| レポートNO | 93A23432 |
| 権利 | Copyright |
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