0494685 - ASÚ 2019 RIV FR eng J - Journal Article
Ďurech, J. - Vokrouhlický, D. - Pravec, Petr - Hanus, J. - Farnocchia, D. - Krugly, Yu. N. - Inasaridze, R.Ya. - Ayvazian, V. - Fatka, Petr - Chiorny, V. G. - Gaftonyuk, N. M. - Galád, Adrián - Groom, R. - Hornoch, Kamil - Kučáková, Hana - Kušnirák, Peter - Lehký, M. - Kvaratskhelia, O.I. - Masi, G. - Molotov, I.E. - Oey, J. - Pollock, J. - Shevchenko, V. G. - Vraštil, J. - Warner, B. D.
YORP and Yarkovsky effects in asteroids (1685) Toro, (2100) Ra-Shalom, (3103) Eger, and (161989) Cacus.
Astronomy & Astrophysics. Roč. 609, January (2018), č. článku A86. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA ČR(CZ) GA17-00774S; GA ČR GAP209/12/0229
Grant - others:GA ČR(CZ) GA13-01308S
Institutional support: RVO:67985815
Keywords : near-earth objects * thermal physics * minor planets
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 6.209, year: 2018 ; AIS: 1.735, rok: 2018
DOI: https://doi.org/10.1051/0004-6361/201731465

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.
Permanent Link: http://hdl.handle.net/11104/0287785