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Spins, shapes, and orbits for near-Earth objects by Nordic NEON

Muinonen, Karri and Torppa, Johanna and Virtanen, Jenni and Näränen, Jyri and Niemelä, Jarkko and Granvik, Mikael and Laakso, Teemo and Parviainen, Hannu and Aksnes, Kaare and Dai, Zhang and Lagerkvist, Claes-Ingvar and Rickman, Hans and Karlsson, Ola and Hahn, Gerhard and Michelsen, Rene and Grav, Tommy and Pravec, Petr and Jörgensen, Uffe Grae (2006) Spins, shapes, and orbits for near-Earth objects by Nordic NEON. In: Proceedings of the International Astronomical Union, 2, pp. 309-320. Cambridge University Press. The IAU Symposium No. 236 Near-Earth Objects, our Celestial Neighbors: Opportunity and Risk, 2006-08-14 - 2006-08-18, Prague (Czech Republic).

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Abstract

The Nordic Near-Earth-Object Network (NEON) observing program accrues knowledge about the physical and dynamical properties of near-Earth objects (NEOs) using state-ofthe-art inverse methods. Photometric and astrometric observations are being carried out at the Nordic Optical Telescope. Here, the NEON observations from June 2004 - September 2006 are reviewed. Statistical orbital inversion is illustrated by the application of the so-called Volume-of-Variation method to NEON observations. Spins and shapes are characterized using shape models that allow analytical computation of disk-integrated brightnesses in arbitrary illumination and observation geometries for Lommel-Seeliger and Lambert scattering laws. The analytical treatment allows error analyses for the spins and shapes using large numbers of discrete sample solutions to the statistical inverse problem. Currently, statistical spin and shape solutions have been derived for 2002 FF12, 2003 MS2, 2003 RX7, 2004 HW as well as for (1685) Toro and (1981) Midas. For (1862) Apollo, an unambiguous spin and shape solution has been obtained using the convex inversion method.

Item URL in elib:https://elib.dlr.de/44983/
Document Type:Conference or Workshop Item (Paper)
Additional Information:doi: 10.1017/S1743927307003377
Title:Spins, shapes, and orbits for near-Earth objects by Nordic NEON
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Muinonen, KarriUniversity of HelsinkiUNSPECIFIED
Torppa, JohannaUniversity of HelsinkiUNSPECIFIED
Virtanen, JenniUniversity of HelsinkiUNSPECIFIED
Näränen, JyriUniversity of HelsinkiUNSPECIFIED
Niemelä, JarkkoUniversity of HelsinkiUNSPECIFIED
Granvik, MikaelUniversity of HelsinkiUNSPECIFIED
Laakso, TeemoUniversity of HelsinkiUNSPECIFIED
Parviainen, HannuUniversity of HelsinkiUNSPECIFIED
Aksnes, KaareUniversity of OsloUNSPECIFIED
Dai, ZhangUniversity of OsloUNSPECIFIED
Lagerkvist, Claes-IngvarUppsala Astronomical ObservatoryUNSPECIFIED
Rickman, HansUppsala Astronomical ObservatoryUNSPECIFIED
Karlsson, OlaUppsala Astronomical ObservatoryUNSPECIFIED
Hahn, GerhardUNSPECIFIEDUNSPECIFIED
Michelsen, ReneTechnical University of DenmarkUNSPECIFIED
Grav, TommyUniversity of HawaiiUNSPECIFIED
Pravec, PetrAstronomical Institute, Ondrejov, Czech RepublicUNSPECIFIED
Jörgensen, Uffe GraeAstronomical Observatory CopenhagenUNSPECIFIED
Date:October 2006
Journal or Publication Title:Proceedings of the International Astronomical Union
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:2
Page Range:pp. 309-320
Editors:
EditorsEmail
Milani, AndreaUNSPECIFIED
Valsecchi, GiovanniUNSPECIFIED
Vokroulicky, DavidUNSPECIFIED
Publisher:Cambridge University Press
Status:Published
Keywords:radiative transfer, scattering, celestial mechanics, data analysis, methods: numerical, methods: statistical, techniques: photometric, astrometry, comets: general, minor planets, asteroids
Event Title:The IAU Symposium No. 236 Near-Earth Objects, our Celestial Neighbors: Opportunity and Risk
Event Location:Prague (Czech Republic)
Event Type:international Conference
Event Dates:2006-08-14 - 2006-08-18
Organizer:IAU
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
Deposited By: Hahn, Dr.phil. Gerhard
Deposited On:29 Aug 2007
Last Modified:14 Jan 2010 23:33

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