MASCOT—The Mobile Asteroid Surface Scout Onboard the Hayabusa2 Mission

Ho, Tra‐Mi; Baturkin, Volodymyr; Grimm, Christian; Grundmann, Jan Thimo; Hobbie, Catherin Fiona; Ksenik, Eugen; Lange, Caroline; Sasaki, Kaname; Schlotterer, Markus; Talapina, Maria; Termtanasombat, Nawarat; Wejmo, Elisabet; Witte, Lars; Wrasmann, Michael; Wübbels, Guido; Rößler, Johannes; Ziach, Christian; Findlay, Ross; Biele, Jens; Krause, Christian; Ulamec, Stephan; Lange, Michael; Mierheim, Olaf; Lichtenheldt, Roy; Maier, Maximilian; Reill, Josef; Sedlmayr, Hans-Jürgen; Bousquet, Pierre; Bellion, Anthony; Bompis, Olivier; Cénac-Morthe, C.; Deleuze, M.; Fredon, S.; Jurado, Eric; Canalias, Elisabet; Jaumann, R.; Bibring, Jean‐Pierre; Glaßmeier, K.‐H.; Herčík, David; Grott, M.; Celotti, Luca; Cordero, Federico; Hendrikse, Jeffrey; Okada, Tatsuaki

doi:10.1007/978-94-024-1538-4_18

Cited by 84 publications

(4 citation statements)

References 29 publications

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“…The Mobile Asteroid Surface Scout (MASCOT) (Ho et al, ) is a small lander on the Hayabusa2 mission (Watanabe et al, ) of the Japan Aerospace Exploration Agency investigating the near‐Earth asteroid 162173 Ryugu (provisional designation 1999 JU

_{3}

) (Wada et al, ). Hayabusa2's main mission goal is to bring material samples from the asteroid's surface back to Earth.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Properties of Asteroid (162173) Ryugu

et al. 2020

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Observations of the magnetization state of asteroids indicate diverse properties. Values between 1.9 × 10 −6 Am 2 /kg (Eros) and 10 −2 Am 2 /kg (Braille) have been reported. A more detailed understanding of asteroidal magnetic properties allows far-reaching conclusions of the magnetization mechanism as well as the strength of the magnetic field of the solar system regions the asteroid formed in. The Hayabusa2 mission with its lander Mobile Asteroid Surface Scout is equipped with a magnetometer experiment, MasMag. MasMag is a state-of-the-art three-axis fluxgate magnetometer, successfully operated also on Philae, the Rosetta mission lander. MasMag has enabled, after Eros for the second time ever, to determine the magnetic field of an asteroid during descent and on-surface operations. The new observations show that Ryugu, a low-albedo C-type asteroid, has no detectable global magnetization, and any local magnetization is either small (< 10 −6 Am 2 /kg) or on very small (subcentimeter) scales. This implies, for example, that energetic solar wind particles could reach and alter the surface unimpeded by strong asteroidal magnetic fields, such as minimagnetospheres in case of the Moon.Plain Language Summary Magnetic measurements in space near and on solar system bodies such as asteroids can provide important information about their formation history and their material properties. Hayabusa2, a Japanese mission, visited asteroid Ryugu, a type of asteroid (carbon rich) not visited before. Ryugu is a rubble pile, that is, an agglomeration of rocks and boulders. It is not expected to have any global magnetic field, but it can be magnetized on smaller scales (boulders or pebbles). Hayabusa2 carried therefore a small lander called Mobile Asteroid Surface Scout equipped also with an instrument for magnetic field measurement (magnetometer). In this study, we present observations from the magnetometer that were collected during Mobile Asteroid Surface Scout's descent and landing on the surface of Ryugu. The magnetic measurements show that Ryugu is not magnetized on boulder (greater than centimeter) scales. This gives us indication on its origin and evolution. In particular, it shows that Ryugu and the bodies it was created from did not possess any magnetic field generation mechanism and that they were not created in an environment with strong background magnetic field. The results are important inputs for theories about the solar system evolution that work with magnetic field as one of the drivers for dust accretion and planetary formation.

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_{3}

) (Wada et al, ). Hayabusa2's main mission goal is to bring material samples from the asteroid's surface back to Earth.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Properties of Asteroid (162173) Ryugu

et al. 2020

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“…Since these systems are compact and lightweight they are suited for miniature landers or handheld applications as well. The Hayabusa-2 mission to asteroid Ryugu deployed multiple small landers, such as MASCOT, to investigate the asteroid in situ 27 . MASCOT weighs around 10 kg and has a volume of 15,500 cm 3 .…”

Section: Other Lims/ld-ms Applications On Space Exploration Missionsmentioning

confidence: 99%

Detecting the elemental and molecular signatures of life: Laser-based mass spectrometry technologies

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Tulej

et al. 2021

Bulletin of the AAS

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“…Technologies for landing have been developed for the lander Philae of the Rosetta mission which was landing 12 November 2014 on the comet 67P/Churyumov-Gerasimenko ten years and eight months after departing Earth [27,31]. Similarly, the asteroid landing package MASCOT (Mobile Asteroid Surface Scout) was developed by DLR in cooperation with the Japanese Aerospace Exploration Agency (JAXA) and the Centre National d'Études Spatiales (CNES) [13]. It is traveling onboard JAXA's mission Hayabusa 2 to its landing target the asteroid 162173 Ryugu.…”

Section: Motivation and Goalsmentioning

confidence: 99%

ATON (Autonomous Terrain-based Optical Navigation) for exploration missions: recent flight test results

et al. 2018

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Since 2010 the German Aerospace Center (DLR) is working on the project ATON (Autonomous Terrain-based Optical Navigation). Its objective is the development of technologies which allow autonomous navigation of spacecraft in orbit around and during landing on celestial bodies like the Moon, planets, asteroids and comets. The project developed different image processing techniques and optical navigation methods as well as sensor data fusion. The setup-which is applicable to many exploration missions-consists of an inertial measurement unit (IMU), a laser altimeter, a star tracker and one or multiple navigation cameras. In the past years, several milestones have been achieved. It started with the setup of a simulation environment including the detailed simulation of camera images. This was continued by hardware-in-the-loop tests in the Testbed for Robotic Optical Navigation where images were generated by real cameras in a simulated downscaled lunar landing scene. Data was recorded

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MASCOT—The Mobile Asteroid Surface Scout Onboard the Hayabusa2 Mission

Cited by 84 publications

References 29 publications

Magnetic Properties of Asteroid (162173) Ryugu

Magnetic Properties of Asteroid (162173) Ryugu

Detecting the elemental and molecular signatures of life: Laser-based mass spectrometry technologies

ATON (Autonomous Terrain-based Optical Navigation) for exploration missions: recent flight test results

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