First fragment of Asteroid 4 Vesta's mantle detected

Vishnu Reddy; Andreas Nathues; Michael J. Gaffey

doi:10.1016/j.icarus.2010.11.032

First fragment of Asteroid 4 Vesta's mantle detected

Vishnu Reddy, Andreas Nathues, Michael J. Gaffey

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

We report the first detection of a fragment of Asteroid (4) Vesta's mantle in the near-Earth and main belt Vestoid populations. The near-infrared (NIR) spectrum of near-Earth Asteroid (237442) 1999 TA₁₀ shows band parameters, and inferred surface mineralogy, and pyroxene chemistry, similar to diogenite meteorites, which are believed to be fragments of (4) Vesta's upper mantle. This strongly indicates that the impact that led to the excavation of 1999 TA₁₀ was deep enough to sample Vesta's upper mantle and provides constraints on Vesta's internal structure that can be verified by the Dawn mission.

Original language	English (US)
Pages (from-to)	175-179
Number of pages	5
Journal	Icarus
Volume	212
Issue number	1
DOIs	https://doi.org/10.1016/j.icarus.2010.11.032
State	Published - Mar 2011
Externally published	Yes

Keywords

Asteroid Vesta
Near-Earth objects
Planetary formation
Spectroscopy

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1016/j.icarus.2010.11.032

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title = "First fragment of Asteroid 4 Vesta's mantle detected",

abstract = "We report the first detection of a fragment of Asteroid (4) Vesta's mantle in the near-Earth and main belt Vestoid populations. The near-infrared (NIR) spectrum of near-Earth Asteroid (237442) 1999 TA10 shows band parameters, and inferred surface mineralogy, and pyroxene chemistry, similar to diogenite meteorites, which are believed to be fragments of (4) Vesta's upper mantle. This strongly indicates that the impact that led to the excavation of 1999 TA10 was deep enough to sample Vesta's upper mantle and provides constraints on Vesta's internal structure that can be verified by the Dawn mission.",

keywords = "Asteroid Vesta, Near-Earth objects, Planetary formation, Spectroscopy",

author = "Vishnu Reddy and Andreas Nathues and Gaffey, {Michael J.}",

note = "Funding Information: This research was supported by NASA NEOO Program Grant NG04GI17G and NASA PGG Program Grant NNX07AL29G . Portions of this work were supported by PAST Grant NNG05GF90G . The authors would like to thank Tom Burbine for his help and suggestions to improve the manuscript.",

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doi = "10.1016/j.icarus.2010.11.032",

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AU - Reddy, Vishnu

AU - Nathues, Andreas

AU - Gaffey, Michael J.

N1 - Funding Information: This research was supported by NASA NEOO Program Grant NG04GI17G and NASA PGG Program Grant NNX07AL29G . Portions of this work were supported by PAST Grant NNG05GF90G . The authors would like to thank Tom Burbine for his help and suggestions to improve the manuscript.

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AB - We report the first detection of a fragment of Asteroid (4) Vesta's mantle in the near-Earth and main belt Vestoid populations. The near-infrared (NIR) spectrum of near-Earth Asteroid (237442) 1999 TA10 shows band parameters, and inferred surface mineralogy, and pyroxene chemistry, similar to diogenite meteorites, which are believed to be fragments of (4) Vesta's upper mantle. This strongly indicates that the impact that led to the excavation of 1999 TA10 was deep enough to sample Vesta's upper mantle and provides constraints on Vesta's internal structure that can be verified by the Dawn mission.

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KW - Near-Earth objects

KW - Planetary formation

KW - Spectroscopy

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First fragment of Asteroid 4 Vesta's mantle detected

Abstract

Keywords

ASJC Scopus subject areas

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