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The Origin of Planetary Impactors in the Inner Solar System
TLDR
Old craters from a unique period of heavy bombardment that ended ∼3.8 billion years ago were made by asteroids that were dynamically ejected from the main asteroid belt, possibly due to the orbital migration of the giant planets.
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Subaru Main Belt Asteroid Survey (SMBAS)—Size and color distributions of small main-belt asteroids
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Size and Spatial Distributions of Sub-km Main-Belt Asteroids ∗
This paper presents the result of the first systematic investigation of very small Main-Belt Asteroids (sub-km MBAs) using the Subaru Prime-Focus Camera (Suprime-Cam) with an 8K ×10K mosaic CCD array…
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Detailed Images of Asteroid 25143 Itokawa from Hayabusa
TLDR
Rendezvous of the Japanese spacecraft Hayabusa with the near-Earth asteroid 25143 Itokawa took place during the interval September through November 2005 and the onboard camera imaged the solid surface of this tiny asteroid with a spatial resolution of 70 centimeters per pixel, revealing diverse surface morphologies.
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A New Surface Density Model of Jovian Trojans around Triangular Libration Points
We constructed a new surface number density distribution model for Jovian Trojans around the L4 or L5 libration point of Jupiter. This is an empirical asymmetric model of the Maxwellian-Gaussian…
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A Comparative Study of Size Distributions for Small L4 and L5 Jovian Trojans
We examined the size distributions of small L4 and L5 Jovian Trojan asteroids detected in the Subaru main belt asteroid survey (SMBAS). This was the first attempt to make a comparison of the size…
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Mature and Fresh Surfaces on the Newborn Asteroid Karin
Here we report a near-infrared (J, H, and K bands) spectroscopy of 832 Karin, the brightest asteroid among the Karin cluster group, which is thought to be the remnants of a collisional breakup only…
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The inner solar system cratering record and the evolution of impactor populations
We review previously published and newly obtained crater size-frequency distributions in the inner solar system. These data indicate that the Moon and the terrestrial planets have been bombarded by…
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A study of asteroid pole-latitude distribution based on an extended set of shape models derived by the lightcurve inversion method
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The tensile strength of dust aggregates consisting of small elastic grains: constraints on the size of condensates in protoplanetary discs
A consensus view on the formation of planetesimals is now exposed to a threat, since recent numerical studies on the mechanical properties of dust aggregates tend to dispute the conceptual picture…
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