Evidence for widespread hydrated minerals on asteroid (101955) Bennu

Nature Astronomy
V E HamiltonOSIRIS-REx Team

Abstract

Early spectral data from the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission reveal evidence for abundant hydrated minerals on the surface of near-Earth asteroid (101955) Bennu in the form of a near-infrared absorption near 2.7 μm and thermal infrared spectral features that are most similar to those of aqueously altered CM carbonaceous chondrites. We observe these spectral features across the surface of Bennu, and there is no evidence of substantial rotational variability at the spatial scales of tens to hundreds of meters observed to date. In the visible and near-infrared (0.4 to 2.4 μm) Bennu's spectrum appears featureless and with a blue (negative) slope, confirming previous ground-based observations. Bennu may represent a class of objects that could have brought volatiles and organic chemistry to Earth.

References

Apr 30, 2010·Nature·Humberto CampinsJulie Ziffer
Apr 30, 2010·Nature·Andrew S Rivkin, Joshua P Emery
Mar 21, 2019·Nature Communications·C W HergenrotherUNKNOWN OSIRIS-REx Team
Mar 21, 2019·Nature·D S LaurettaUNKNOWN OSIRIS-REx Team
May 14, 2019·Nature Geoscience·O S BarnouinUNKNOWN OSIRIS-REx Team.
Apr 1, 2019·Nature Astronomy·D J ScheeresUNKNOWN OSIRIS-REx Team.

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Citations

Oct 2, 2020·Journal of Geophysical Research. Planets·W F BottkeD S Lauretta
Oct 2, 2020·Journal of Geophysical Research. Planets·J L MolaroD S Lauretta
May 14, 2019·Nature Geoscience·O S BarnouinUNKNOWN OSIRIS-REx Team.
Mar 21, 2019·Nature·D S LaurettaUNKNOWN OSIRIS-REx Team
Jun 11, 2020·Nature Communications·J L MolaroD S Lauretta
Jul 28, 2020·Journal of Geophysical Research. Planets·D J ScheeresD S Lauretta
May 8, 2020·Proceedings of the National Academy of Sciences of the United States of America·Nola Taylor Redd
Jul 7, 2020·Space Science Reviews·Queenie Hoi Shan ChanHikaru Yabuta
Oct 10, 2020·Science Advances·B RozitisD S Lauretta
Oct 10, 2020·Science·D N DellaGiustinaD S Lauretta
Oct 13, 2020·Journal of Geophysical Research. Planets·C W HergenrotherD S Lauretta
Oct 10, 2020·Science·Amy A SimonCarina A Bennett
Oct 27, 2020·Heliyon·Yu Jiang, Jürgen Schmidt
Jan 1, 2021·Annual Review of Earth and Planetary Sciences·Meenakshi WadhwaDevin L Schrader
Apr 24, 2021·Meteoritics & Planetary Science·Larry R NittlerMaximilien J Verdier-Paoletti
Jun 26, 2021·Scientific Reports·F NestolaM C Domeneghetti
Nov 20, 2019·Chemical Reviews·Daniel P GlavinJason P Dworkin
Oct 7, 2021·Nature Communications·Eri TatsumiSeiji Sugita

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Software Mentioned

MapCam
OVIRS
PolyCam

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