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The Accuracy of the Warm Spitzer Near-Earth Object Survey

Harris, A.W. and Mommert, M. and Hora, J.L. and Mueller, M. and Trilling, D.E. and Bhattacharya, B. and Bottke, W.F. and Chesley, S. and Delbo, M. and Emery, J.P. and Fazio, G.G. and Mainzer, A. and Penprase, B. and Smith, H.A. and Spahr, T.B. and Stansberry, J.A. and Thomas, C.A. (2010) The Accuracy of the Warm Spitzer Near-Earth Object Survey. In: Bulletin of the American Astronomical Society, 42 (4), p. 1081. American Astronomical Society. American Astronomical Society Division for Planetary Sciences meeting #42, 3-8 Oct 2010, Pasadena, USA. ISSN 0002-7537

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Official URL: http://www.abstractsonline.com/plan/ViewAbstract.aspx?mID=2704&sKey=8102c03d-20b1-47e2-951c-335d761edbf4&cKey=781a00a6-6f4f-4cc0-994f-b47b34ae51d2&mKey={D515DFC0-245C-4047-81CC-C221DC1A54C6}

Abstract

We report on observations of near-Earth objects (NEOs) performed with IRAC as part of our on-going (2009-2011) Warm Spitzer NEO survey (“ExploreNEOs”), the primary aim of which is to provide sizes and albedos of some 700 NEOs. The emphasis of the work described here is an assessment of the overall accuracy of our survey results, which are based on a semi-empirical generalized model of asteroid thermal emission. The set of some 170 NEOs in our current Warm Spitzer results catalog contains 28 for which published taxonomic classifications are available, and 14 for which relatively reliable published diameters and albedos are available. From a comparison of the Warm Spitzer results with results expected on the basis of previous observations, we conclude that Warm Spitzer diameters and albedos are accurate to about 25% and 50%, respectively. Cases in which agreement with results from the literature is worse than expected are highlighted and discussed; these include the potential spacecraft target 138911 2001 AE2. This work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA.

Document Type:Conference or Workshop Item (Paper)
Title:The Accuracy of the Warm Spitzer Near-Earth Object Survey
Authors:
AuthorsInstitution or Email of Authors
Harris, A.W.alan.harris@dlr.de
Mommert, M.michael.mommert@dlr.de
Hora, J.L.Harvard-Smithsonian Center for Astrophysics, USA
Mueller, M.Universite de Nice Sophia Antipolis, France
Trilling, D.E.Northern Arizona University, USA
Bhattacharya, B.NASA Herschel Science Center Caltech, USA
Bottke, W.F.Southwest Research Institute, USA
Chesley, S.Jet Propulsion Laboratory, California Institute of Technology, USA
Delbo, M.Universite de Nice Sophia Antipolis, France
Emery, J.P.Department of Earth and Planetary Sciences, University of Tennessee, USA
Fazio, G.G.Harvard-Smithsonian Center for Astrophysics, USA
Mainzer, A.Jet Propulsion Laboratory, California Institute of Technology, USA
Penprase, B.Department of Physics and Astronomy, Pomona College, USA
Smith, H.A.Harvard-Smithsonian Center for Astrophysics, USA
Spahr, T.B.Harvard-Smithsonian Center for Astrophysics, USA
Stansberry, J.A.Steward Observatory, University of Arizona, USA
Thomas, C.A.Northern Arizona University, USA
Date:October 2010
Journal or Publication Title:Bulletin of the American Astronomical Society
Volume:42
Page Range:p. 1081
Editors:
EditorsEmail
Marvel, K.B.UNSPECIFIED
Publisher:American Astronomical Society
ISSN:0002-7537
Status:Published
Keywords:Near-Earth objects, Spitzer Space telescope
Event Title:American Astronomical Society Division for Planetary Sciences meeting #42
Event Location:Pasadena, USA
Event Type:international Conference
Event Dates:3-8 Oct 2010
Organizer:American Astronomical Society
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Vorhaben Asteroiden und Kometen (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Asteroids and Comets
Deposited By: Prof. Alan Harris
Deposited On:03 Jan 2011 20:33
Last Modified:03 Jan 2011 20:33

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