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NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos

Nugent, C. R. and Mainzer, A. and Bauer, J. and Cutri, R. M. and Kramer, E. A. and Grav, T. and Masiero, J. and Sonnett, S. and Wright, E. L. (2016) NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos. Astronomical Journal, 152 (3). Art. No. 63. ISSN 0004-6256. https://resolver.caltech.edu/CaltechAUTHORS:20160824-091134467

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Abstract

The Near-Earth Object Wide-Field Infrared Survey Explorer (NEOWISE) mission continues to detect, track, and characterize minor planets. We present diameters and albedos calculated from observations taken during the second year since the spacecraft was reactivated in late 2013. These include 207 near-Earth asteroids (NEAs) and 8885 other asteroids. Of the NEAs, 84% NEAs did not have previously measured diameters and albedos by the NEOWISE mission. Comparison of sizes and albedos calculated from NEOWISE measurements with those measured by occultations, spacecraft, and radar-derived shapes shows accuracy consistent with previous NEOWISE publications. Diameters and albedos fall within ±~20% and ±~40%, 1-sigma, respectively, of those measured by these alternate techniques. NEOWISE continues to preferentially discover near-Earth objects which are large (>100 m), and have low albedos.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.3847/0004-6256/152/3/63DOIArticle
http://iopscience.iop.org/article/10.3847/0004-6256/152/3/63/metaPublisherArticle
http://arxiv.org/abs/1606.08923arXivDiscussion Paper
ORCID:
AuthorORCID
Cutri, R. M.0000-0002-0077-2305
Kramer, E. A.0000-0003-0457-2519
Grav, T. 0000-0002-3379-0534
Masiero, J.0000-0003-2638-720X
Sonnett, S.0000-0003-2762-8909
Wright, E. L.0000-0001-5058-1593
Additional Information:© 2016 The American Astronomical Society. Received 2016 May 4; revised 2016 June 4; accepted 2016 June 6; published 2016 August 19. The authors thank the reviewer, Valerio Carruba, for his careful review that improved the quality of this manuscript. This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and JPL/California Institute of Technology, funded by NASA. This publication also makes use of data products from NEOWISE, which is a project of the JPL/California Institute of Technology, funded by the Planetary Science Division of NASA. The JPL High-Performance Computing Facility used for our simulations is supported by the JPL Office of the CIO. This research has made use of the NASA/IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This project used data obtained with the Dark Energy Camera (DECam), which was constructed by the Dark Energy Survey (DES) collaboration. Funding for the DES Projects has been provided by the U.S. Department of Energy, the U.S. National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University, Financiadora de Estudos e Projetos, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvolvimento Científico e Tecnológico and the Ministério da Ciência, Tecnologia e Inovacão, the Deutsche Forschungsgemeinschaft, and the Collaborating Institutions in the Dark Energy Survey. The Collaborating Institutions are Argonne National Laboratory, the University of California at Santa Cruz, the University of Cambridge, Centro de Investigaciones Enérgeticas, Medioambientales y Tecnológicas-Madrid, the University of Chicago, University College London, the DES-Brazil Consortium, the University of Edinburgh, the Eidgenössische Technische Hochschule (ETH) Zürich, Fermi National Accelerator Laboratory, the University of Illinois at Urbana-Champaign, the Institut de Ciències de l'Espai (IEEC/CSIC), the Institut de Física d'Altes Energies, Lawrence Berkeley National Laboratory, the Ludwig-Maximilians Universität München and the associated Excellence Cluster universe, the University of Michigan, the National Optical Astronomy Observatory, the University of Nottingham, the Ohio State University, the University of Pennsylvania, the University of Portsmouth, SLAC National Accelerator Laboratory, Stanford University, the University of Sussex, and Texas A&M University. This work makes use of observations from the LCOGT network. The authors wish to thank G. Williams for providing the corrected H and G values from his dissertation used in this work. This publication makes use of observations obtained at the Gemini Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under a cooperative agreement with the NSF on behalf of the Gemini partnership: the National Science Foundation (United States), the National Research Council (Canada), CONICYT (Chile), Ministerio de Ciencia, Tecnología e Innovación Productiva (Argentina), and Ministério da Ciência, Tecnologia e Inovação (Brazil). Observing Program IDs: GS-2015A-LP-3, GS-2015B-LP-3.
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NASA/JPL/CaltechUNSPECIFIED
JPL Office of the Chief Information OfficerUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Ministerio de Educación y Ciencia (MEC)UNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
Higher Education Funding Council for EnglandUNSPECIFIED
National Center for Supercomputing Applications (NCSA)UNSPECIFIED
University of ChicagoUNSPECIFIED
Ohio State University Center for Cosmology and Astro-Particle PhysicsUNSPECIFIED
Texas A&M University Mitchell Institute for Fundamental Physics and AstronomyUNSPECIFIED
Financiadora de Estudos e Projetos (FINEP) UNSPECIFIED
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJUNSPECIFIED
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)UNSPECIFIED
Ministério da Ciência, Tecnologia e Inovação (MCTI)UNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG)UNSPECIFIED
Collaborating Institutions in the Dark Energy SurveyUNSPECIFIED
University of Illinois Urbana-ChampaignUNSPECIFIED
Kavli Institute for Cosmological PhysicsUNSPECIFIED
Subject Keywords:minor planets, asteroids: general; surveys
Issue or Number:3
Record Number:CaltechAUTHORS:20160824-091134467
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20160824-091134467
Official Citation:C. R. Nugent et al 2016 The Astronomical Journal 152 63
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:69887
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:24 Aug 2016 22:15
Last Modified:03 Oct 2019 10:26

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