3 papers
astro-ph.EP2025
Demonstrating Exoplanet Transit Photometry from Space with a 15-mm Aperture Optical Navigation Camera on Hayabusa2
Koki Yumoto, Toru Kouyama, Manabu Yamada +14
Observations of exoplanet transits by small satellites have gained increasing attention for reducing detection biases. However, no unambiguous detection of an exoplanet has yet bee…
astro-ph.EP2024
Comparison of optical spectra between asteroids Ryugu and Bennu: II. High-precision analysis for space weathering trends
K. Yumoto, E. Tatsumi, T. Kouyama +25
The influence of space weathering on the observed spectra of C-complex asteroids remains uncertain. This has long hindered our understanding of their composition through telescope…
astro-ph.EP2024
Comparison of optical spectra between asteroids Ryugu and Bennu:I. Cross calibration between Hayabusa2/ONC-T and OSIRIS-REx/MapCam
K. Yumoto, E. Tatsumi, T. Kouyama +25
Asteroids (162173) Ryugu and (101955) Bennu observed by Hayabusa2 and OSIRIS-REx share many properties, but spectral observations by the telescopic Optical Navigation Camera (ONC-T…