Detectability of hydrous minerals using ONC-T camera onboard the Hayabusa2 spacecraft

The Origin and Evolution of Organic Matter in Carbonaceous Chondrites and Links to Their Parent Bodies

“…On the other hand, the other ground-based observations did not detect a clear feature 0.7 µm (Lazzaro et al, 2013;Moskovitz et al, 2013). Thus, hydrous minerals may be distributed locally and/or during a limited time period (Kameda et al, 2015). Their reflectance spectra can be also explained by combination of the heated Murchison meteorite at different temperatures (Hiroi et al, 1993), and thus the surface of the asteroid Ryugu may have experienced heterogeneous heating, e.g., impact, space weathering, and solar radiation heating.…”

Hayabusa2 extended mission: New voyage to rendezvous with a small asteroid rotating with a short period

“…Spacecraft operations included remote sensing mapping, material sampling, surface observations using robotic rovers and landers, and an impact experiment, which revealed Ryugu's environment. The spacecraft is equipped with the following remote sensing instruments (Watanabe et al, 2017): Optical Navigation Camera (ONC) (Kameda et al, 2017(Kameda et al, , 2015Suzuki et al, 2018;Tatsumi et al, 2019); Laser Altimeter (LIDAR) (Mizuno et al, 2017;Senshu et al, 2017;Yamada et al, 2017); Near-Infrared Spectrometer (NIRS3) (Iwata et al, 2017); and Thermal Infrared Imager (TIR) (Arai et al, 2017;Okada et al, 2017;Takita et al, 2017). The spacecraft also had multiple rovers and a lander that includes multiple remote sensing instruments (Bibring et al, 2017;Grott et al, 2017;Herčík et al, 2017;Ho et al, 2017;Jaumann et al, 2017), a sampling system (Okazaki et al, 2017;Sawada et al, 2017b), a Small Carry-on Impactor (SCI) (Saiki et al, 2020), and a Deployable Camera (DCAM3) (Ishibashi et al, 2017;Ogawa et al, 2017;Sawada et al, 2017a) for observations of the SCI impact crater formation (Arakawa et al, 2017).…”

Simulation of Seismic Wave Propagation on Asteroid Ryugu Induced by The Impact Experiment of The Hayabusa2 Mission: Limited Mass Transport by Low Yield Strength of Porous Regolith

“…The SCI experiment can also be regarded as an active seismic experiment (Arakawa et al, 2017), although there are no seismometers placed on the asteroid. Instead, images of the impact site before and after the SCI experiment were taken by Optical Navigation Camera (ONC) (Kameda et al, 2015(Kameda et al, , 2017, allowing the measurement of boulder movement by comparing two sets of images. Because the impact energy of SCI was sufficiently large, the surface morphology was predicted to be modified due to regolith movement (Arakawa et al, 2017).…”