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YORP and Yarkovsky effects in asteroids (1685) Toro, (2100) Ra-Shalom, (3103) Eger, and (161989) Cacus
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SYSNO ASEP 0494685 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title YORP and Yarkovsky effects in asteroids (1685) Toro, (2100) Ra-Shalom, (3103) Eger, and (161989) Cacus Author(s) Ďurech, J. (CZ)
Vokrouhlický, D. (CZ)
Pravec, Petr (ASU-R) RID, ORCID
Hanus, J. (CZ)
Farnocchia, D. (US)
Krugly, Yu. N. (UA)
Inasaridze, R.Ya. (GE)
Ayvazian, V. (GE)
Fatka, Petr (ASU-R) ORCID
Chiorny, V. G. (UA)
Gaftonyuk, N. M. (UA)
Galád, Adrián (ASU-R) RID
Groom, R. (AU)
Hornoch, Kamil (ASU-R) ORCID
Kučáková, Hana (ASU-R) ORCID
Kušnirák, Peter (ASU-R)
Lehký, M. (CZ)
Kvaratskhelia, O.I. (GE)
Masi, G. (IT)
Molotov, I.E. (RU)
Oey, J. (AU)
Pollock, J. (US)
Shevchenko, V. G. (UA)
Vraštil, J. (CZ)
Warner, B. D. (US)Number of authors 25 Article number A86 Source Title Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 609, January (2018)Number of pages 10 s. Publication form Online - E Language eng - English Country FR - France Keywords near-earth objects ; thermal physics ; minor planets Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics OECD category Astronomy (including astrophysics,space science) R&D Projects GA17-00774S GA ČR - Czech Science Foundation (CSF) GAP209/12/0229 GA ČR - Czech Science Foundation (CSF) Institutional support ASU-R - RVO:67985815 UT WOS 000423434200004 EID SCOPUS 85042534493 DOI https://doi.org/10.1051/0004-6361/201731465 Annotation We analyzed lightcurves of four selected near-Earth asteroids with the aim of detecting secular changes in their rotation rates that are caused by YORP or at least of putting upper limits on such changes. We use the lightcurve inversion method to model the observed lightcurves and include the change in the rotation rate d omega/dt as a free parameter of optimization. To enlarge the time line of observations and to increase the sensitivity of the method, we collected more than 70 new lightcurves. For asteroids Toro and Cacus, we used thermal infrared data from the WISE spacecraft and estimated their size and thermal inertia by means of a thermophysical model. We also used the currently available optical and radar astrometry of Toro, Ra-Shalom, and Cacus to infer the Yarkovsky effect. Workplace Astronomical Institute Contact Anežka Melichárková, bibl@asu.cas.cz, Tel.: 323 620 326 Year of Publishing 2019
Number of the records: 1