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The preliminary shape of Ceres

Elgner, Stephan and Matz, Klaus-Dieter and Roatsch, Thomas and Jaumann, Ralf and Raymond, C.A. and Russell, C.T. (2015) The preliminary shape of Ceres. European Planetary Science Congress, 27. Sep. - 02. Okt. 2015, Nantes, Frankreich.

[img] PDF (EPSC Poster Ceres Limbs)
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Abstract

Methods have been developed to derive the global shape of an asteroid quickly with the help of limb images taken by spacecraft. Topographic profiles are found by applying a contrast-based search along the limb. By minimizing height differences at crossover locations between the individual limb profiles their locations are improved and a global network is created. We used images taken by the Dawn spacecraft during the Ceres approach in February of 2015 to derive the shape of the asteroid. 87 images from the RC1, RC2, OPNAV 4, OPNAV 6, and OPNAV 7 phases have been examined yielding a network of topographic profiles spanning from ca. 78°S to 83°N. By fitting a tri-axial ellipsoid to the data we found Ceres to be an oblate spheroid with axes significantly smaller than previously estimated.

Item URL in elib:https://elib.dlr.de/100652/
Document Type:Conference or Workshop Item (Poster)
Title:The preliminary shape of Ceres
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Elgner, Stephanstephan.elgner (at) dlr.deUNSPECIFIED
Matz, Klaus-Dieterklaus-dieter.matz (at) dlr.deUNSPECIFIED
Roatsch, Thomasthomas.roatsch (at) dlr.deUNSPECIFIED
Jaumann, Ralfralf.jaumann (at) dlr.deUNSPECIFIED
Raymond, C.A.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109-8099, USAUNSPECIFIED
Russell, C.T.Institute of Geophysics, University of California, Los Angeles, Los Angeles, CA 90095UNSPECIFIED
Date:September 2015
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Ceres, Dawn, shape, limb
Event Title:European Planetary Science Congress
Event Location:Nantes, Frankreich
Event Type:international Conference
Event Dates:27. Sep. - 02. Okt. 2015
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 - Vorhaben Exploration des Sonnensystems
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Deposited By: Elgner, Stephan
Deposited On:08 Dec 2015 15:28
Last Modified:31 Jul 2019 19:57

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