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Spectrophotometric Analysis of the Ryugu Rock Seen by MASCOT: Searching for a Carbonaceous Chondrite Analog

Schröder, Stefan and Otto, Katharina A. and Scharf, Hannah and Matz, Klaus-Dieter and Schmitz, Nicole and Scholten, Frank and Mottola, Stefano and Trauthan, Frank and Koncz, Alexander and Michaelis, Harald and Jaumann, Ralf and Ho, Tra-Mi and Yabuta, Hikaru and Sugita, Seiji (2021) Spectrophotometric Analysis of the Ryugu Rock Seen by MASCOT: Searching for a Carbonaceous Chondrite Analog. The Planetary Science Journal, 2 (2), p. 58. Institute of Physics (IOP) Publishing. doi: 10.3847/PSJ/abbb97. ISSN 2632-3338.

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Official URL: https://iopscience.iop.org/article/10.3847/PSJ/abbb97


We analyze images of a rock on Ryugu acquired in situ by MASCam, the camera on the mascot lander, with the aim of identifying possible carbonaceous chondrite (CC) analogs. The rock's reflectance (${r}_{{\rm{F}}}=0.034\pm 0.003$ at phase angle ${4.5}^{\circ }\pm {0.1}^{\circ }$) is consistent with Ryugu's average reflectance, suggesting that the rock is typical for this asteroid. A spectrophotometric analysis of the rock's inclusions provides clues to its CC group membership. Inclusions are generally brighter than the matrix. The dominant variation in their color is a change in the visible spectral slope, with many inclusions being either red or blue. Spectral variation in the red channel hints at the presence of the 0.7 μm absorption band linked to hydrated phyllosilicates. The inclusions are unusually large for a CC; we find that their size distribution may best match that of the Renazzo (CR2) and Leoville (CV3) meteorites. The Ryugu rock does not easily fit into any of the CC groups, consistent with the idea that typical Ryugu-type meteorites are too fragile to survive atmospheric entry.

Item URL in elib:https://elib.dlr.de/195954/
Document Type:Article
Title:Spectrophotometric Analysis of the Ryugu Rock Seen by MASCOT: Searching for a Carbonaceous Chondrite Analog
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Schröder, StefanUNSPECIFIEDhttps://orcid.org/0000-0003-0323-8324UNSPECIFIED
Otto, Katharina A.UNSPECIFIEDhttps://orcid.org/0000-0002-0675-1177UNSPECIFIED
Scharf, HannahInstitut für Planetenforschung, DLR BerlinUNSPECIFIEDUNSPECIFIED
Matz, Klaus-DieterUNSPECIFIEDhttps://orcid.org/0000-0002-4148-1926UNSPECIFIED
Schmitz, NicoleUNSPECIFIEDhttps://orcid.org/0000-0001-6481-6189UNSPECIFIED
Mottola, StefanoUNSPECIFIEDhttps://orcid.org/0000-0002-0457-3872UNSPECIFIED
Jaumann, RalfUNSPECIFIEDhttps://orcid.org/0000-0002-9759-6597UNSPECIFIED
Ho, Tra-MiUNSPECIFIEDhttps://orcid.org/0000-0003-3378-3227UNSPECIFIED
Yabuta, HikaruUNSPECIFIEDhttps://orcid.org/0000-0002-4625-5362UNSPECIFIED
Sugita, SeijiUNSPECIFIEDhttps://orcid.org/0000-0001-6076-3614UNSPECIFIED
Date:16 March 2021
Journal or Publication Title:The Planetary Science Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Page Range:p. 58
Publisher:Institute of Physics (IOP) Publishing
Keywords:Spectrophotometry Ryugu MASCOT Carbonaceous Chondrite Analog Asteroid
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Project MASCOT - Science
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geology
Institute of Planetary Research > Planetary Geodesy
Institute of Planetary Research > Planetary Sensor Systems
Deposited By: Schmitz, Nicole
Deposited On:11 Jul 2023 15:30
Last Modified:11 Jul 2023 15:30

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