Sakigake: Difference between revisions
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{{nihongo||[[wikt:先駆け|さきがけ]]|'''Sakigake'''|{{lit|pioneer', 'pathfinder}}}}, known before launch as '''MS-T5''', was Japan's first [[interplanetary spaceflight|interplanetary spacecraft]] and the first [[deep space probe]] to be launched by any country other than the US or the Soviet Union. It aimed to demonstrate the performance of the new [[launch vehicle]], test its ability to escape from [[Earth gravity]], and observe the [[interplanetary medium]] and [[interplanetary magnetic field|magnetic field]]. ''Sakigake'' | {{nihongo||[[wikt:先駆け|さきがけ]]|'''Sakigake'''|{{lit|pioneer', 'pathfinder}}}}, known before launch as '''MS-T5''', was Japan's first [[interplanetary spaceflight|interplanetary spacecraft]] and the first [[deep space probe]] to be launched by any country other than the US or the Soviet Union. It aimed to demonstrate the performance of the new [[launch vehicle]], test its ability to escape from [[Earth gravity]], and observe the [[interplanetary medium]] and [[interplanetary magnetic field|magnetic field]]. ''Sakigake'' also served as a reference probe for [[Halley's Comet]]. Early measurements would be used to improve the mission of the [[Suisei (spacecraft)|Suisei probe]] launched several months later. | ||
''Sakigake'' was developed by the [[Institute of Space and Astronautical Science]] for the [[National Space Development Agency]] (both of which are now part of the [[Japanese Aerospace Exploration Agency]], or JAXA). It became a part of the [[Halley Armada]] together with Suisei, the Soviet [[Vega program|Vega]] probes, the [[European Space Agency|ESA]] [[Giotto (spacecraft)|Giotto]] and the [[National Aeronautics and Space Administration|NASA]] [[International Cometary Explorer]], to explore Halley's Comet during its 1986 sojourn through the inner Solar System. | ''Sakigake'' was developed by the [[Institute of Space and Astronautical Science]] for the [[National Space Development Agency]] (both of which are now part of the [[Japanese Aerospace Exploration Agency]], or JAXA). It became a part of the [[Halley Armada]] together with Suisei, the Soviet [[Vega program|Vega]] probes, the [[European Space Agency|ESA]] [[Giotto (spacecraft)|Giotto]] and the [[National Aeronautics and Space Administration|NASA]] [[International Cometary Explorer]], to explore Halley's Comet during its 1986 sojourn through the inner Solar System. | ||
Latest revision as of 08:57, 17 August 2025
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Script error: No such module "Nihongo"., known before launch as MS-T5, was Japan's first interplanetary spacecraft and the first deep space probe to be launched by any country other than the US or the Soviet Union. It aimed to demonstrate the performance of the new launch vehicle, test its ability to escape from Earth gravity, and observe the interplanetary medium and magnetic field. Sakigake also served as a reference probe for Halley's Comet. Early measurements would be used to improve the mission of the Suisei probe launched several months later.
Sakigake was developed by the Institute of Space and Astronautical Science for the National Space Development Agency (both of which are now part of the Japanese Aerospace Exploration Agency, or JAXA). It became a part of the Halley Armada together with Suisei, the Soviet Vega probes, the ESA Giotto and the NASA International Cometary Explorer, to explore Halley's Comet during its 1986 sojourn through the inner Solar System.
Design
Unlike its twin Suisei, it carried no imaging instruments in its instrument payload.
Launch
Sakigake was launched January 7, 1985, from Kagoshima Space Center by M-3SII launch vehicle on M-3SII-1 mission.
Halley encounter
It carried out a flyby of Halley's Comet on March 11, 1986, at a distance of 6.99 million km.
Giacobini-Zinner encounter
There were plans for the spacecraft to go on to an encounter with 21P/Giacobini-Zinner in 1998, but the flyby had to be abandoned because of a lack of propellant.
End of mission
Telemetry contact was lost on November 15, 1995, though a beacon signal continued to be received until January 7, 1999.[1][2]
References
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External links
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- Sakigake
- Sakigake Mission Profile by NASA's Solar System Exploration
- Halley's Comet Flyby
- Sakigake Mission Comet Halley Data Archive at the NASA Planetary Data System, Small Bodies Node
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