Hayabusa2’s superior solar conjunction mission operations: planning and post-operation results
| Autor: | Kent Yoshikawa, Chikako Hirose, Takafumi Ohnishi, Shota Kikuchi, Yuto Takei, T. Takahashi, Tomohiro Yamaguchi, Yusuke Oki, Takanao Saiki, Fuyuto Terui, Naoko Ogawa, Stefania Soldini, Masaya Nakano, Sho Taniguchi, Satoru Nakazawa, Makoto Yoshikawa, Go Ono, Yuichi Tsuda, Atsushi Fujii, Hirotaka Sawada, Hiroshi Takeuchi, Yuya Mimasu |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
020301 aerospace & aeronautics
Solar conjunction Spacecraft business.industry Computer science Conjunction (astronomy) Blackout Aerospace Engineering Astronomy and Astrophysics 02 engineering and technology 01 natural sciences 0203 mechanical engineering Space and Planetary Science Asteroid 0103 physical sciences medicine Trajectory Low-energy transfer medicine.symptom Aerospace engineering business 010303 astronomy & astrophysics Reference frame |
| Zdroj: | Astrodynamics |
| Popis: | In late 2018, the asteroid Ryugu was in the Sun’s shadow during the superior solar conjunction phase. As the Sun-Earth-Ryugu angle decreased to below 3°, the Hayabusa2 spacecraft experienced 21 days of planned blackout in the Earth-probe communication link. This was the first time a spacecraft had experienced solar conjunction while hovering around a minor body. For the safety of the spacecraft, a low energy transfer trajectory named Ayu was designed in the Hill reference frame to increase its altitude from 20 to 110 km. The trajectory was planned with the newly developed optNEAR tool and validated with real time data. This article shows the results of the conjunction operation, from planning to flight data. |
| Databáze: | OpenAIRE |
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