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Hikaru Yabuta

Researcher at Hiroshima University

Publications -  131
Citations -  4744

Hikaru Yabuta is an academic researcher from Hiroshima University. The author has contributed to research in topics: Asteroid & Chondrite. The author has an hindex of 22, co-authored 91 publications receiving 3645 citations. Previous affiliations of Hikaru Yabuta include Osaka University & Carnegie Institution for Science.

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Journal ArticleDOI

Comet 81P/Wild 2 under a microscope.

Donald E. Brownlee, +185 more
- 15 Dec 2006 - 
TL;DR: The Stardust spacecraft collected thousands of particles from comet 81P/Wild 2 and returned them to Earth for laboratory study, and preliminary examination shows that the nonvolatile portion of the comet is an unequilibrated assortment of materials that have both presolar and solar system origin.
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Organics captured from comet 81P/Wild 2 by the Stardust spacecraft.

TL;DR: The presence of deuterium and nitrogen-15 excesses suggest that some organics have an interstellar/protostellar heritage and a diverse suite of organic compounds is present and identifiable within the returned samples.
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The origin and evolution of chondrites recorded in the elemental and isotopic compositions of their macromolecular organic matter

TL;DR: In a survey of the elemental and isotopic compositions of insoluble organic matter (IOM) from 75 carbonaceous, ordinary and enstatite chondrites, this article found dramatic variations within and between chondrite classes.
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Hayabusa2 arrives at the carbonaceous asteroid 162173 Ryugu—A spinning top–shaped rubble pile

Sei-ichiro Watanabe, +99 more
- 19 Mar 2019 - 
TL;DR: The Hayabusa2 spacecraft measured the mass, size, shape, density, and spin rate of asteroid Ryugu, showing that it is a porous rubble pile, and observations of Ryugu's shape, mass, and geomorphology suggest that Ryugu was reshaped by centrifugally induced deformation during a period of rapid rotation.
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The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes

Seiji Sugita, +132 more
- 19 Apr 2019 - 
TL;DR: Spectral observations and a principal components analysis suggest that Ryugu originates from the Eulalia or Polana asteroid family in the inner main belt, possibly via more than one generation of parent bodies.