The MASCOT Magnetometer

Herčík, David; Auster, H. U.; Blum, Jürgen; Fornaçon, K.‐H.; Fujimoto, M.; Gebauer, Kathrin; Güttler, C.; Hillenmaier, O.; Hördt, Andreas; Liebert, Evelyn; Matsuoka, A.; Nomura, Reiko; Richter, Ingo; Stoll, B.; Weiss, B. P.; Glaßmeier, Karl‐Heinz

doi:10.1007/978-94-024-1538-4_22

Cited by 6 publications

(12 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, an extensive campaign was carried out in order to characterize the interference from the MASCOT flight system and its subunits. The campaign description as well as other detailed information about the instrument can be found in Herčík et al ().…”

Section: Measurementsmentioning

confidence: 99%

“…The MASCOT spacecraft is not magnetically clean and causes also a magnetic DC offset at the magnetometer sensor position. The magnetic cleanliness characterization on ground with results and comparison to in‐flight characteristics is given in Herčík et al (). The offset caused by the separate MASCOT lander can be seen in Figure approximately as the average value, where the data are shown in a coordinate system with minimum variance on the z axis.…”

Section: Data Processingmentioning

confidence: 99%

“…The MASCOT lander provided in situ observations of the surface morphology, surface temperature, and magnetic field. The MASCOT payload comprises a camera (CAM) (Jaumann et al, ), a radiometer (MARA) (Grott et al, ), an infrared spectrometer (MicrOmega) (Bibring et al, ), and a magnetometer (MasMag) (Herčík et al, ).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Magnetic Properties of Asteroid (162173) Ryugu

et al. 2020

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Measurementsmentioning

confidence: 99%

Section: Data Processingmentioning

confidence: 99%

See 1 more Smart Citation

Magnetic Properties of Asteroid (162173) Ryugu

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…The contribution of these features to its maintaining popularity is quite big. For this reason, the use of fluxgate sensors in different application areas is increasing day by day [12][13][14][15][16][17]. Finding an optimal design of fluxgate sensor suitable for nondestructive testing (NDT) and other small area applications requiring local field information were extensively investigated in our previous work [18].…”

Section: Local Magnetic Field Distribution Through the Magnetic Cardmentioning

confidence: 99%

Design of Fluxgate Sensors for Different Applications from Geology to Medicine

Topal

Can

Çelik

et al. 2018

J Supercond Nov Magn

View full text Add to dashboard Cite

In this study, we have shown that fluxgate sensors can be used for different application areas. Alternative sensor configurations have been developed for three different application areas. These are mainly rod-and ring-type fluxgate sensors. In the first study, a measurement system with the rod-type fluxgate sensor has been developed in order to monitor the local magnetic field distributions on a magnetic tape (e.g., credit card). With this system, the magnetic recording data on the credit card were measured and imaged successfully. The second and the third application areas, which are monitoring the influence of solar storms on the earth field and heartbeat analysis of mankind, were carried out by using a ring-core fluxgate sensor geometry.

show abstract

“…MASCOT is an agile, lightweight, highly capable mobile science platform that has been developed by the German Aerospace Centre (DLR) in collaboration with Centre national d'etudes spatiales (CNES) MASCOT can be considered a nano-spacecraft and is carrying four scientific instruments: a camera (MASCAM, Jaumann et al 2016, this special issue), a hyperspectral microscopic imager (MICROMEGA, Bibring et al 2016, this special issue), a magnetometer (MASMAG, Herčik et al 2016, this special issue) and a radiometer (MARA, , this special issue). The overall payload has a mass of ∼3 kg.…”

Section: Introductionmentioning

confidence: 99%

MASCOT—The Mobile Asteroid Surface Scout Onboard the Hayabusa2 Mission

Ho,

Baturkin,

Grimm

et al. 2016

Space Sci Rev

127

View full text Add to dashboard Cite

On December 3rd, 2014, the Japanese Space Agency (JAXA) launched successfully the Hayabusa2 (HY2) spacecraft to its journey to Near Earth asteroid (162173) Ryugu. Aboard this spacecraft is a compact landing package, MASCOT (Mobile Asteroid surface SCOuT), which was developed by the German Aerospace Centre (DLR) in collaboration with the Centre National d'Etudes Spatiales (CNES). Similar to the famous predecessor mission Hayabusa, Hayabusa2, will also study an asteroid and return samples to Earth. This time, however, the target is a C-type asteroid which is considered to be more primitive than (25143) Itokawa and provide insight into an even earlier stage of our Solar System.Upon arrival at asteroid Ryugu in 2018, MASCOT will be released from the HY2 spacecraft and gently descend by free fall from an altitude of about 100 m to the surface of the asteroid. After a few bounces, the lander will come to rest at the surface and perform its scientific investigations of the surface structure and mineralogical composition, the thermal behaviour and the magnetic properties by operating its four scientific instruments. Those include an IR imaging spectrometer (MicrOmega, IAS Paris), a camera (MASCAM, DLR Berlin), a radiometer (MARA, DLR Berlin) and a magnetometer (MASMAG, TU Braunschweig).In order to allow optimized payload operations the thermal design of MASCOT is required to cope with the contrasting requirements of the 4-year cruise in cold environment versus the hot conditions on the surface of the asteroid. Operations up to 2 asteroid days (∼16 hours) based on a primary battery are currently envisaged. A mobility mechanism allows locomotion on the surface. The mechanism is supported by an attitude and motion sensing system and an intelligent autonomy manager, which is implemented in the onboard software that enables MASCOT to operate fully independently when ground intervention is not available.

show abstract

The MASCOT Magnetometer

Cited by 6 publications

References 34 publications

Magnetic Properties of Asteroid (162173) Ryugu

Magnetic Properties of Asteroid (162173) Ryugu

Design of Fluxgate Sensors for Different Applications from Geology to Medicine

MASCOT—The Mobile Asteroid Surface Scout Onboard the Hayabusa2 Mission

Contact Info

Product

Resources

About