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Global photometric properties of Asteroid (4) Vesta observed with Dawn Framing Camera

Li, Jian-Yang and Le Corre, Lucille and Schröder, Stefan E. and Reddy, Vishnu and Denevi, Brett W. and Buratti, Bonnie J. and Mottola, Stefano and Hoffmann, Martin and Gutierrez-Marques, Pablo and Nathues, Andreas and Russell, Christopher T. and Raymond, Carol A. (2013) Global photometric properties of Asteroid (4) Vesta observed with Dawn Framing Camera. Icarus, 226 (2), pp. 1252-1274. Elsevier. DOI: 10.1016/j.icarus.2013.08.011 ISSN 0019-1035

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Official URL: http://dx.doi.org/10.1016/j.icarus.2013.08.011

Abstract

Dawn spacecraft orbited Vesta for more than one year and collected a huge volume of multispectral, high-resolution data in the visible wavelengths with the Framing Camera. We present a detailed disk-integrated and disk-resolved photometric analysis using the Framing Camera images with the Minnaert model and the Hapke model, and report our results about the global photometric properties of Vesta. The photometric properties of Vesta show weak or no dependence on wavelengths, except for the albedo. At 554 nm, the global average geometric albedo of Vesta is 0.38 ± 0.04, and the Bond albedo range is 0.20 ± 0.02. The bolometric Bond albedo is 0.18 ± 0.01. The phase function of Vesta is similar to those of S-type asteroids. Vesta’s surface shows a single-peaked albedo distribution with a full-widthhalf-max 17% relative to the global average. This width is much smaller than the full range of albedos (from 0.55 to >2 global average) in localized bright and dark areas of a few tens of km in sizes, and is probably a consequence of significant regolith mixing on the global scale. Rheasilvia basin is 10% brighter than the global average. The phase reddening of Vesta measured from Dawn Framing Camera images is comparable or slightly stronger than that of Eros as measured by the Near Earth Asteroid Rendezvous mission, but weaker than previous measurements based on ground-based bservations of Vesta and laboratory measurements of HED meteorites. The photometric behaviors of Vesta are best described by the Hapke model and the Akimov disk-function, when compared with the Minnaert model, Lommel–Seeliger model, and Lommel–Seeliger–Lambertian model. The traditional approach for photometric correction is validated for Vesta for >99% of its surface where reflectance is within ±30% of global average.

Item URL in elib:https://elib.dlr.de/84820/
Document Type:Article
Title:Global photometric properties of Asteroid (4) Vesta observed with Dawn Framing Camera
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Li, Jian-YangPlanetary Science Institute, Tucson, AZ 85719, USAUNSPECIFIED
Le Corre, LucillePlanetary Science Institute, Tucson, AZ 85719, USAUNSPECIFIED
Schröder, Stefan E.stefanus.schroeder (at) dlr.deUNSPECIFIED
Reddy, VishnuMax Planck Institute for Solar System Research, Katlenburg-Lindau, Germany; Department of Space Studies, University of North Dakota, Grand Forks, ND 58202, USAUNSPECIFIED
Denevi, Brett W.Johns Hopkins University, Applied Physics Laboratory, Laurel, MD 20723, USAUNSPECIFIED
Buratti, Bonnie J. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USAUNSPECIFIED
Mottola, Stefanostefano.mottola (at) dlr.deUNSPECIFIED
Hoffmann, MartinMax Planck Institute for Solar System Research, Katlenburg-Lindau, GermanyUNSPECIFIED
Gutierrez-Marques, PabloMax Planck Institute for Solar System Research, Katlenburg-Lindau, GermanyUNSPECIFIED
Nathues, AndreasMax Planck Institute for Solar System Research, Katlenburg-Lindau, GermanyUNSPECIFIED
Russell, Christopher T.Institute of Geophysics and Planetary Physics, University of California Los Angeles, Los Angeles, CA 90095, USAUNSPECIFIED
Raymond, Carol A.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USAUNSPECIFIED
Date:2013
Journal or Publication Title:Icarus
Refereed publication:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:226
DOI :10.1016/j.icarus.2013.08.011
Page Range:pp. 1252-1274
Publisher:Elsevier
ISSN:0019-1035
Status:Published
Keywords:Asteroid Vesta Asteroids, surfaces Photometry Spectrophotometry
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt DAWN
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Asteroids and Comets
Institute of Planetary Research > Planetary Geology
Deposited By: Mottola, Dr.phys. Stefano
Deposited On:13 Nov 2013 14:22
Last Modified:10 Jan 2019 15:54

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