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High-Resolution Observations of Bright Boulders on Asteroid Ryugu: 1. Size Frequency Distribution and Morphology
Chiho Sugimoto, Eri Tatsumi, Yuichiro Cho +34
The near-Earth asteroid (162173) Ryugu displays a Cb-type average spectrum and a very low average normal albedo of 0.04. Although the majority of boulders on Ryugu have reflectance…
High-Resolution Observations of Bright Boulders on Asteroid Ryugu: 2. Spectral Properties
Chiho Sugimoto, Eri Tatsumi, Yuichiro Cho +34
Many small boulders with reflectance values higher than 1.5 times the average reflectance have been found on the near-Earth asteroid 162173 Ryugu. Based on their visible wavelength…
The surface of (1) Ceres in visible light as seen by Dawn/VIR
B. Rousseau, M. C. De Sanctis, A. Raponi +9
We study the surface of Ceres at visible wavelengths, as observed by the Visible and InfraRed mapping spectrometer (VIR) onboard the Dawn spacecraft, and analyze the variations of…
Bouncing on Titan: Motion of the Huygens Probe in the Seconds After Landing
Stefan E. Schröder, Erich Karkoschka, Ralph D. Lorenz
While landing on Titan, several instruments onboard Huygens acquired measurements that indicate the probe did not immediately come to rest. Detailed knowledge of the probe's motion…
Evidence for Surface Variegation in Rosetta OSIRIS Images of Asteroid 2867 Steins
S. E. Schröder, H. U. Keller, P. Gutierrez +4
The OSIRIS camera onboard Rosetta successfully acquired images of asteroid 2867 Steins through a variety of color filters during the flyby on 5 September 2008. The best images of t…
In-flight calibration of the Dawn Framing Camera II: Flat fields and stray light correction
S. E. Schröder, S. Mottola, K. -D. Matz +1
The NASA Dawn spacecraft acquired thousands of images of asteroid Vesta during its year-long orbital tour, and is now on its way to asteroid Ceres. A method for calibrating images…