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Thread: Hayabusa 2 - Japan's sample return probe to asteroid 1999 JU3

  1. #121
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    Results from Mobile Asteroid Surface Scout (MASCOT)'s landing on Ryugu indicate it is a "a fragile cosmic 'rubble pile'"

    http://www.spacedaily.com/reports/Th..._pile_999.html

    In the summer of 2018, the asteroid Ryugu, which measures only approximately 850 metres across, was visited by the Japanese Hayabusa2 spacecraft. On board was the 10-kilogram German-French Mobile Asteroid Surface Scout (MASCOT) - a lander no bigger than a microwave oven and equipped with four instruments. On 3 October 2018 MASCOT, operated by the control centre at the German Aerospace Center (Deutsches Zentrum fur Luft- und Raumfahrt; DLR) in Cologne, separated from its mother craft 41 metres above the asteroid.

    It touched down on the surface for the first time six minutes after deployment, before coming to a halt 11 minutes later, like a dice on a board game moving in slow motion. Over the course of 17 hours, MASCOT carried out experiments in various places amid the large boulders.

    Evaluation of the image data from DLR's MASCOT camera (MASCam) showing the descent and Ryugu's surface has now revealed a detailed view of a fragile 'rubble pile' made up of two different, almost black, types of rock with little internal cohesion. The scientific team, led by planetary researcher Ralf Jaumann from the DLR Institute of Planetary Research in Berlin-Adlershof, have now reported on this in the current issue of Science.
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  2. #122
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    "Hayabusa2 Lander Mania: Results from MASCOT, Plans for MINERVA-II2"

    http://www.planetary.org/blogs/jason...der-mania.html

    Japan's Hayabusa2 spacecraft only has about 3 months left at asteroid Ryugu, and between now and its departure it’s going to drop more stuff on the surface. Although operations are still ongoing, mission scientists have been busy: there’s a new paper out in Science analyzing what the MASCOT lander saw as it tumbled around the asteroid's rocks and boulders for 17 hours last October.
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  3. #123
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    "Japan’s Next Asteroid Robot – Ready for Deployment"

    https://www.leonarddavid.com/japans-...or-deployment/

    Japan’s Hayabusa2 asteroid explorer is soon to dispatch a new robot onto space rock of ages, Ryugu.

    The spacecraft is slated to unload the roughly 2.2 pounds (one kilogram) Minerva-II2 next month – a device equipped with a camera, thermometer, photodiode, and accelerometer.

    Minerva is short for MIcro-Nano Experimental Robot Vehicle for Asteroid.
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  4. #124
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    "Hayabusa2 completes key missions"

    https://the-japan-news.com/news/arti...030bd00627ef8a

    The Hayabusa2 unmanned spacecraft has completed all its major observation missions for the asteroid Ryugu, according to the Japan Aerospace Exploration Agency (JAXA).

    The Minerva-II 2 robotic explorer released on Oct. 3 from Hayabusa2 successfully orbited the asteroid and landed on it the following day, JAXA said Monday.

    After the mission, Hayabusa2 is set to leave Ryugu in November or December to return to Earth.

    “We’ve succeeded in high-precision gravity measurements,” JAXA researcher Kento Yoshikawa told a news conference, adding that Hayabusa2 researched the asteroid to the maximum extent possible.
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  5. #125
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    Quote Originally Posted by selvaarchi View Post
    I haven'y kept too close attention, but wasn't it supposed to capture some material for return to Earth?

  6. #126
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    Quote Originally Posted by bknight View Post
    I haven'y kept too close attention, but wasn't it supposed to capture some material for return to Earth?
    It did - see earlier threads
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  7. #127
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    "Hayabusa2 departs from Ryugu"

    https://global.jaxa.jp/press/2019/11/20191113a.html

    JAXA confirmed Hayabusa2, JAXA's asteroid explorer, left the target asteroid Ryugu.
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  8. #128
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    Oh, thought it wasn't due to do that until December.
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  9. #129
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    "Hayabusa2 starts testing main engines"

    https://www3.nhk.or.jp/nhkworld/en/news/20191120_34/

    Japan's space agency says its asteroid explorer Hayabusa2 has started testing its main engines to return to Earth.

    The probe reached the asteroid Ryugu in June last year. It landed there twice to collect rock samples before leaving on November 13.

    The Japan Aerospace Exploration Agency, or JAXA, said on Wednesday that Hayabusa2's main ion engines were turned on. They had been off for about one and a half years.

    The probe is to spend 13 days testing its four ion engines to confirm they work properly, before starting its return to Earth on or after December 3.
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  10. #130
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    "Hayabusa2 now on return journey to Earth"

    https://www3.nhk.or.jp/nhkworld/en/news/20191203_23/

    Japan's space agency says its asteroid explorer Hayabusa2 is on its way back to Earth after confirming its main engines are working properly.

    The probe reached the asteroid Ryugu June last year and spent about one and a half years exploring its surface before leaving on November 13.

    Tests were then performed on its four main ion engines over a two-week period.

    The Japan Aerospace Exploration Agency, or JAXA, announced that the engines were ready before sending the probe on a return journey on Tuesday at 11a.m., Japan time.

    JAXA says the probe is more than 250 million kilometers from Earth and is scheduled to arrive home around November or December next year.
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  11. #131
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    "Hayabusa2 thermal imaging shows asteroid Ryugu is porous inside"

    https://mainichi.jp/english/articles...0m/0na/012000c

    The asteroid Ryugu is reportedly porous in structure, according to observations made by the Japan Aerospace Exploration Agency's (JAXA) Hayabusa2 probe which were published in the online edition of the U.K. science journal "Nature" on March 17.
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  12. #132
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    Interesting. Kind of supports the "agglomeration of smaller rocks" theory of asteroid formation, I'd think.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  13. #133
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    "Hayabusa2's larger than expected crater has deep impact on asteroid age theories"

    https://mainichi.jp/english/articles...0m/0na/013000c

    The crater made on the surface of the asteroid Ryugu by Japanese space probe Hayabusa2 is semicircular and measures around 14.5 meters in diameter, according to data revealed by the Japan Aerospace Exploration Agency (JAXA), Kobe University and others.

    The findings, published on March 20 in the electronic edition of the U.S. journal "Science," allowed researchers to estimate that Ryugu's surface formed between millions and tens of millions of years ago, based on how easy it was to make the crater. This would mean that the asteroid Ryugu has a very high chance of being a relatively young celestial object, particularly when considered within the estimated 4.6-billion-year history of our solar system.
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  14. #134
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    "JAXA: Asteroid Ryugu may have shifted orbit"

    https://www3.nhk.or.jp/nhkworld/en/news/20200508_03/

    Japan's space agency says it has found that the asteroid Ryugu may have orbited between the Sun and Mercury in the distant past. That's different from its current orbit, which passes between Earth and Mars, but not between the Sun and Mercury.

    The Japan Aerospace Exploration Agency, or JAXA, says it analyzed images of the asteroid taken by a camera on its probe Hayabusa2.

    JAXA says much of the sand and rock on the surface of Ryugu turned red when exposed to heat of more than 600 degrees Celsius. It says such high temperatures are inconceivable even when the asteroid is at its closest point to the Sun in its current orbit.
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  15. #135
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    "Hayabusa2 to return samples to Earth in Dec."

    https://www3.nhk.or.jp/nhkworld/en/news/20200714_14/

    Japan's asteroid probe Hayabusa2 will return a capsule containing samples from the asteroid Ryugu to Earth in early December.

    Japan's education ministry announced that Hayabusa2 is scheduled to drop the capsule onto an Australian desert on December 6.
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  16. #136
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    "The Hayabusa2 Re-entry Capsule Approved to Land in Australia"

    https://global.jaxa.jp/press/2020/08/20200819-1_e.html

    On August 10, 2020, JAXA was informed that the Authorisation of Return of Overseas-Launched Space Object (AROLSO) for the re-entry capsule from Hayabusa2 was issued by the Australian Government. The date of the issuance is August 6, 2020.

    The Hayabusa2 re-entry capsule will return to Earth in South Australia on December 6, 2020 (Japan Time and Australian Time). The landing site will be the Woomera Prohibited Area. The issuance of the AROLSO gave a major step forward for the capsule recovery.
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  17. #137
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    "Japan's Hayabusa2 aims to probe asteroid "1998KY26" in 2031"

    https://english.kyodonews.net/news/2...6-in-2031.html

    Japan's Hayabusa2 space explorer will aim to probe the asteroid "1998KY26" located between the orbits of Earth and Mars in 2031 after completing its current mission of collecting samples from another asteroid, the country's science minister said Tuesday.

    It is hoped Hayabusa2 will approach the ball-shaped asteroid, which has a diameter of around 30 meters and rotates about every 10 minutes, in July 2031, Education, Culture, Sports, Science and Technology Minister Koichi Hagiuda said.
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  18. #138
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    "Asteroid Ryugu shaken by Hayabusa2's impactor"

    https://www.spacedaily.com/reports/A...actor_999.html

    Professor ARAKAWA Masahiko (Graduate School of Science, Kobe University, Japan) and members of the Hayabusa2 mission discovered more than 200 boulders ranging from 30cm to 6m in size, which either newly appeared or moved as a result of the artificial impact crater created by Japanese spacecraft Hayabusa2's Small Carry-on Impactor (SCI) on April 5th, 2019. Some boulders were disturbed even in areas as far as 40m from the crater center.

    The researchers also discovered that the seismic shaking area, in which the surface boulders were shaken and moved an order of cm by the impact, extended about 30m from the crater center. Hayabusa2 recovered a surface sample at the north point of the SCI crater (TD2), and the thickness of ejecta deposits at this site were estimated to be between 1.0mm to 1.8cm using a Digital Elevation Map (DEM). These findings on a real asteroid's resurfacing processes can be used as a benchmark for numerical simulations of small body impacts, in addition to artificial impacts in future planetary missions such as NASA's Double Asteroid Redirection Test (DART).The results will be presented at the 52nd meeting of the AAS Division of Planetary Science on October 30th in the session entitled Asteroids: Bennu and Ryugu 2.
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  19. #139
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    "Hayabusa2 adjusts for return of capsule to Earth"

    https://www3.nhk.or.jp/nhkworld/en/news/20201126_35/

    Japan's asteroid explorer Hayabusa2 has completed its engine thrusts to adjust the orbit for returning its capsule to Earth next month.
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  20. #140
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    Japan spacecraft approaches Earth to drop asteroid samples

    QUOTE: Japanese space agency officials said Friday the Hayabusa2 spacecraft is on its intended trajectory as it approaches Earth to deliver a capsule containing samples from a distant asteroid that could provide clues to the origin of the solar system and life on Earth. The spacecraft left the asteroid Ryugu, about 300 million kilometers (180 million miles) away, a year ago. The capsule is to be released 220,000 kilometers (136,700 miles) away in space and land in a remote, sparsely populated area of Woomera, Australia, on Sunday.

    https://apnews.com/article/japan-sol...3ee31afbbec32d
    https://phys.org/news/2020-12-austra...veal-life.html
    https://phys.org/news/2020-12-specia...ace-probe.html
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    Does JAXA have any plans for the mother ship after it drops off the samples? IIRÇ, the spacecraft that delivered the samples from Itakawa, which had suffered multiple technical problems, burned up in Earth's atmosphere.

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    Does JAXA have any plans for the mother ship after it drops off the samples? IIRÇ, the spacecraft that delivered the samples from Itokawa, which had suffered multiple technical problems, burned up in Earth's atmosphere.

  23. #143
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    Hayabusa 2 - Japan's sample return probe to asteroid 1999 JU3

    According the AP article linked above:

    For Hayabusa2, it’s not the end of the mission it started in 2014. After dropping the capsule, it will return to space and head to another distant small asteroid called 1998KY26 on a journey slated to take 10 years one way.
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    Good luck, Hayabusa!
    The greatest journey of all time, for all to see
    Every mission makes our dreams reality
    And our destiny begins with you and me
    Through all space and time, the achievement of mankind
    As we sail the sea of discovery, on heroes’ wings we fly!

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    The capsule was successfully recovered in the Australian outback.

    https://www.bbc.com/news/science-environment-55201662
    As above, so below

  26. #146
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    Quote Originally Posted by Jens View Post
    The capsule was successfully recovered in the Australian outback.

    https://www.bbc.com/news/science-environment-55201662
    Has Japan used the Australia outback as a landing/dropping off point before?

  27. #147
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    Quote Originally Posted by Selenite View Post
    Has Japan used the Australia outback as a landing/dropping off point before?
    Yes, the original Hayabusa mission:

    https://en.wikipedia.org/wiki/Hayabusa

    https://en.wikipedia.org/wiki/Hayabu...sule_retrieval

    I’m not sure if there were any others aside from Hayabusa and Hayabusa 2.

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    Quote Originally Posted by Van Rijn View Post
    Yes, the original Hayabusa mission:

    https://en.wikipedia.org/wiki/Hayabusa

    https://en.wikipedia.org/wiki/Hayabu...sule_retrieval

    I’m not sure if there were any others aside from Hayabusa and Hayabusa 2.
    Well not Japan, but the USA has definitely used it to 'dispose' of spacecraft - Skylab in 1979 by spreading itself over my state.

  29. #149
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    Quote Originally Posted by ozduck View Post
    Well not Japan, but the USA has definitely used it to 'dispose' of spacecraft - Skylab in 1979 by spreading itself over my state.
    I think at the time the US was trying to keep pace with the Soviet Union which managed to splash a radioactive satellite over half of Canada's Northwest Territory a year before.

    https://en.wikipedia.org/wiki/Kosmos_954

    For a brief period it seems like we went from Space Race to Space Disgrace.

  30. #150
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    Quote Originally Posted by Jens View Post
    The capsule was successfully recovered in the Australian outback.

    https://www.bbc.com/news/science-environment-55201662
    Congratulations Japan
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