Detection of the YORP effect in asteroid (1620) Geographos
Josef ĎurechAstronomical Institute, Charles University in Prague, V Holešovičkách 2, 18000 Prague, Czech Republic e-mail: [email protected]David VokrouhlickýAstronomical Institute, Charles University in Prague, V Holešovičkách 2, 18000 Prague, Czech Republic e-mail: [email protected]M. KaasalainenDepartment of Mathematics and Statistics, Rolf Nevanlinna Institute, PO Box 68, 00014, University of Helsinki, FinlandDavid HigginsHunters Hill Observatory, 7 Mawalan Street, Ngunnawal ACT 2913, AustraliaYu. N. KruglyInstitute of Astronomy of Kharkiv National University, Sumska str. 35, Kharkiv 61022, UkraineN. M. GaftonyukCrimean Astrophysical Observatory, Simeiz 98680, UkraineV. G. ShevchenkoInstitute of Astronomy of Kharkiv National University, Sumska str. 35, Kharkiv 61022, UkraineV. G. ChiornyInstitute of Astronomy of Kharkiv National University, Sumska str. 35, Kharkiv 61022, UkraineHiromi HamanowaHamanowa Astronomical Observatory, Hikarigaoka 4-34, Motomiya, Fukushima, JapanHiromi HamanowaHamanowa Astronomical Observatory, Hikarigaoka 4-34, Motomiya, Fukushima, JapanV. ReddyDepartment of Earth System Science and Policy, University of North Dakota, Grand Forks, ND 58203, USAR. Dyvig
2008en
ABI
Аннотация
Aims. The rotation state of small asteroids is affected by the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) torque. The directly observable consequence of the YORP effect is the secular change of the asteroid's rotation period. We carried out new photometric observations of asteroid (1620) Geographos in 2008 to extend the time line that, if long enough, would enable us to see possible deviations from a constant period rotation.
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