Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mala.iafcv....d&link_type=abstract
IAF, International Astronautical Congress, 40th, Malaga, Spain, Oct. 7-13, 1989. 12 p.
Astronomy and Astrophysics
Astronomy
Comets, Japanese Space Program, Spacecraft Trajectories, Trajectory Optimization, European Space Agency, Giacobini-Zinner Comet, Giotto Mission, Swingby Technique
Scientific paper
Early in 1996, the relatively bright short-period Comet Honda-Mrkos-Pajdusakova (HMP) will pass only 0.17 astronomical unit from the earth, providing both an unusually favorable apparition for ground-based observers and an opportunity for a spacecraft to reach Comet HMP on relatively low-energy trajectories. The Japanense Institute of Space and Astronautical Sciences Sakigake spacecraft is expected to fly by Comet HMP on February 3, 1996, after utilizing four earth swingbys to modify its orbit. If the camera on the ESA Giotto spacecraft is inoperable, Giotto may also be sent to Comet HMP. In addition, 1-year earth-return trajectories to Comet HMP are described, along with some that can be extended to encounter Comet Giacobini-Zinner in 1998.
Dunham David W.
Farquhar Robert W.
Jen Shao-Chiang
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