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Tumbling asteroids

Pravec, Petr and Harris, Alan W. and Scheirich, P. and Kušnirák, P. and Šarounová, L. and Hergenrother, Cark W. and Mottola, Stefano and Hicks, Michael and Masi, Gianluca and Krugly, Yura N. and Shevchenko, V.G. and Nolan, Michael C. and Howell, Ellen S. and Kaasalainen, Mikko and Galád, A. and Brown, P. and DeGraff, D. R. and Lambert, J. V. and Cooney Jr., V. R. and Foglia, S. (2004) Tumbling asteroids. Icarus: International Journal of Solar System Studies, 173 (1), pp. 108-131. Elsevier. DOI: doi:10.1016/j.icarus.2004.07.021

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Abstract

We present both a review of earlier data and new results on non-principal axis rotators (tumblers) among asteroids. Among new tumblers found, the best data we have are for 2002 TD60, 2000WL107, and (54789) 2001 MZ7—each of them shows a lightcurve with two frequencies (full terms with linear combinations of the two frequencies are present in the lightcurve). For 2002 TD60, we have constructed a physical model of the NPA rotation. Other recent objects which have been found to be likely tumblers based on their lightcurves that do not fit with a single periodicity are 2002 NY40, (16067) 1999 RH27, and (5645) 1990 SP. We have done a statistical analysis of the present sample of the population of NPA rotators. It appears that most asteroids larger than ~ 0.4 km with estimated damping timescales (Harris, 1994, Icarus 107, 209) of 4.5 byr and longer are NPA rotators. The statistic of two short-period tumblers (D = 0.04 and 0.4 km) with non-zero tensile strength suggests that for them the quantity μQ/T , where μ is the mechanical rigidity, Q is the elastic dissipation factor, and T is a spin excitation age (i.e., a time elapsed since the last significant spin excitation event), is greater by two to four orders of magnitude than the larger, likely rubble-pile tumblers. Among observational conditions and selection effects affecting detections of NPA rotations, there is a bias against detection of low-amplitude (small elongation) tumblers.

Item URL in elib:https://elib.dlr.de/19323/
Document Type:Article
Title:Tumbling asteroids
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pravec, PetrAstronomical Institute, Academy of Sciences of the Czech Republic, Fricova 1, CZ-25165 Ondrejov, Czech RepublicUNSPECIFIED
Harris, Alan W.Space Science Institute, Boulder, CO 80301, USAUNSPECIFIED
Scheirich, P.Astronomical Institute, Academy of Sciences of the Czech Republic, Fricova 1, CZ-25165 Ondrejov, Czech RepublicUNSPECIFIED
Kušnirák, P.Astronomical Institute, Academy of Sciences of the Czech Republic, Fricova 1, CZ-25165 Ondrejov, Czech RepublicUNSPECIFIED
Šarounová, L.Astronomical Institute, Academy of Sciences of the Czech Republic, Fricova 1, CZ-25165 Ondrejov, Czech RepublicUNSPECIFIED
Hergenrother, Cark W.Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USAUNSPECIFIED
Mottola, StefanoUNSPECIFIEDUNSPECIFIED
Hicks, MichaelJet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USAUNSPECIFIED
Masi, GianlucaPhysics Department, University of Rome “Tor Vergata”, Via della Ricerca Scientifica 1, 00133 Rome, ItalyUNSPECIFIED
Krugly, Yura N.Institute of Astronomy of Kharkiv National University, Sumska Str. 35, Kharkiv 61022, UkraineUNSPECIFIED
Shevchenko, V.G.Institute of Astronomy of Kharkiv National University, Sumska Str. 35, Kharkiv 61022, UkraineUNSPECIFIED
Nolan, Michael C.Arecibo Observatory, National Astronomy and Ionosphere Center, PR 00612, USAUNSPECIFIED
Howell, Ellen S.Arecibo Observatory, National Astronomy and Ionosphere Center, PR 00612, USAUNSPECIFIED
Kaasalainen, MikkoDepartment of Mathematics/Rolf Nevanlinna Institute, University of Helsinki, PO Box 4, FIN-00014, FinlandUNSPECIFIED
Galád, A.Modra Observatory, Astronomical Institute, FMFI Comenius University, Bratislava, Slovak RepublicUNSPECIFIED
Brown, P.Department of Physics and Astronomy, University of Western Ontario, London, ON N6A 3K7, CanadaUNSPECIFIED
DeGraff, D. R.Alfred University, 1 Saxon Drive, Alfred, NY 14802, USAUNSPECIFIED
Lambert, J. V.Air Force Maui Optical and Supercomputing Facility, Kihei, HI 96753, USAUNSPECIFIED
Cooney Jr., V. R.Blackberry Observatory, 1927 Fairview Dr., Port Allen, LA 70767, USAUNSPECIFIED
Foglia, S.Serafino Zani Observatory, Lumezzane, I-25065, ItalyUNSPECIFIED
Date:25 September 2004
Journal or Publication Title:Icarus: International Journal of Solar System Studies
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:173
DOI :doi:10.1016/j.icarus.2004.07.021
Page Range:pp. 108-131
Publisher:Elsevier
Status:Published
Keywords:Asteroids, excited rotation, photometry
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: Mottola, Dr.phys. Stefano
Deposited On:24 Jan 2007
Last Modified:12 Dec 2013 20:08

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