| タイトル | Pathfinder - Accuracy improvement of comet Halley trajectory for Giotto navigation |
| 著者（英） | Muench, R. E.; Jordan, J. F.; Sagdeev, R. Z. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech.|Institute of Space Research|European Space Agency. European Space Operations Center |
| 発行日 | 1986-05-15 |
| 言語 | eng |
| 内容記述 | The 'Pathfinder' project uses the resources of NASA, ESA and Intercosmos to support the Giotto space probe flyby of comet Halley. The required 500-km approach to comet Halley on the sunward side was so uncertain as to preclude the trajectory's realization with sufficient accuracy on the basis of ground-based astronomical observations alone. Spaceborne observations by the two Vega satellites were accordingly conducted; these, in combination with a very accurate determination of the Vega trajectories using VLBI, allowed a flyby distance of 600 km to be achieved with only + or - 40 km uncertainty. |
| NASA分類 | SPACE COMMUNICATIONS, SPACECRAFT COMMUNICATIONS, COMMAND AND TRACKING |
| レポートNO | 86A40902 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/384081 |
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