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- The University of TokyoJP399 papers
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56 papers · 1 filter
Bundle adjustment of Hayabusa2's ONC images and controlled color mosaic map of Ryugu
Naoyuki Hirata, Eri Tatsumi, Mayumi Ichikawa +2
JAXA's Hayabusa2 mission successfully returned samples from the asteroid Ryugu in December 2020. It executed two touchdowns to collect the surface and subsurface materials, one clo…
Rings around giant planets and smaller bodies
Keiji Ohtsuki
All the four giant planets in our Solar System have rings, but their characteristics are very different. The rings consist of a number of small particles, although individual parti…
Discovery and dynamics of a Sedna-like object with a perihelion of 66 au
Ying-Tung Chen, Patryk Sofia Lykawka, Yukun Huang +30
Trans-Neptunian objects (TNOs) with large perihelion distances ( au) and semi-major axes ( au) provide insights into the early evolution of the solar system and th…
Investigation of boulder distribution in (1) Ceres and insight into its surface evolution
Mitsuha Noma, Naoyuki Hirata
The surface conditions of terrestrial bodies strongly reflect their geological evolutionary processes and vary among various terrestrial bodies. This diversity is attributed to var…
Jupiter's cloud-level variability triggered by torsional oscillations in the interior
Kumiko Hori, Chris A. Jones, Arrate Antuñano +2
Jupiter's weather layer exhibits long-term and quasi-periodic cycles of meteorological activity that can completely change the appearance of its belts and zones. There are cycles w…
Secondary cratering from Rheasilvia as the possible origin of Vesta's equatorial troughs
Naoyuki Hirata
Asteroid 4 Vesta has a set of parallel troughs aligned with its equator. Although previous evaluations suggest that it is of shock fracturing tectonic origin, we propose that the e…