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 b...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 fight data.展开更多
文摘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 fight data.
