Time:
07/02/2022 07:30 PM PDT
07/02/2022 08:30 PM MDT
07/02/2022 09:30 PM CDT
07/02/2022 10:30 PM EDT
07/03/2022 03:30 AM BST
07/03/2022 04:30 AM CEST
07/03/2022 10:30 AM Taiwan
07/02/2022 07:30 PM PDT
07/02/2022 08:30 PM MDT
07/02/2022 09:30 PM CDT
07/02/2022 10:30 PM EDT
07/03/2022 03:30 AM BST
07/03/2022 04:30 AM CEST
07/03/2022 10:30 AM Taiwan
研究領域 (Field):
physics
研究子領域 (Sub-field):
planetary science
physics
研究子領域 (Sub-field):
planetary science
Abstract:
On April 13th, 2029, a Potential Hazardous Asteroid (PHA) 99942 Apophis will visit Earth at a distance about 36700 ± 9000 km, which is almost the altitude of geosynchronous satellites. Such a close approach of an asteroid will provide an extraordinary opportunity to study a PHA in great detail and to raise public awareness of planetary defense. Here we propose a mission concept “ACE (Apophis Close Encounter)” which aims to rendezvous with Apophis prior to its 2029 flyby and to shepherd the asteroid for several months to investigate its possible evolution induced by the tidal force of Earth. The mission is scheduled to launch in August 2028 and expected to end in late August or early September of 2029 with a lifetime of around 280 days.
On April 13th, 2029, a Potential Hazardous Asteroid (PHA) 99942 Apophis will visit Earth at a distance about 36700 ± 9000 km, which is almost the altitude of geosynchronous satellites. Such a close approach of an asteroid will provide an extraordinary opportunity to study a PHA in great detail and to raise public awareness of planetary defense. Here we propose a mission concept “ACE (Apophis Close Encounter)” which aims to rendezvous with Apophis prior to its 2029 flyby and to shepherd the asteroid for several months to investigate its possible evolution induced by the tidal force of Earth. The mission is scheduled to launch in August 2028 and expected to end in late August or early September of 2029 with a lifetime of around 280 days.
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