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The Yarkovsky effect describes a small but significant force that affects the orbital motion of meteoroids and asteroids smaller than $30-40$ kilometers in diameter. It is caused by sunlight; when these bodies heat up in the Sun, they…

地球与行星天体物理 · 物理学 2016-08-31 D. Vokrouhlicky , W. F. Bottke , S. R. Chesley , D. J. Scheeres , T. S. Statler

The Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect plays an important role in the rotational properties and evolution of asteroids. While the YORP effect induced by the macroscopic shape of the asteroid and by the presence of surface…

地球与行星天体物理 · 物理学 2022-12-07 Wen-Han Zhou , Yun Zhang , Xiaoran Yan , Patrick Michel

The main motivation of this research is the analytical exploration of the dynamics of asteroid rotation when it moves in elliptic orbit through Space. According to the results of Efroimsky, Frouard (2016), various perturbations (collisions,…

综合物理 · 物理学 2019-12-12 Sergey V. Ershkov , Roman V. Shamin

Any population of asteroids, like asteroid families, will disperse in semi-major axis due to the Yarkovsky effect. The amount of drift is modulated by the asteroid spin state evolution which determines the balance between the diurnal and…

地球与行星天体物理 · 物理学 2020-09-02 Francesco Marzari , Alessandro Rossi , Oleksiy Golubov , Daniel Scheeres

Understanding the fate of planetary systems through white dwarfs which accrete debris crucially relies on tracing the orbital and physical properties of exo-asteroids during the giant branch phase of stellar evolution. Giant branch…

地球与行星天体物理 · 物理学 2019-02-20 Dimitri Veras , Arika Higuchi , Shigeru Ida

It is now becoming widely accepted that photon recoil forces from the asymmetric reflection and thermal re-radiation of absorbed sunlight are, together with collisions and gravitational forces, primary mechanisms governing the dynamical and…

地球与行星天体物理 · 物理学 2015-06-04 Ben Rozitis , Simon F. Green

There is a correlation between the components of the YORP effect of most asteroids, which drives the obliquity and spin rate of the affected bodies in a consistent pattern. This allows for a clear and unambiguous picture for how the spin…

地球与行星天体物理 · 物理学 2019-02-20 Oleksiy Golubov , Daniel J. Scheeres

In addition to collisions and gravitational forces, it is now becoming widely acknowledged that photon recoil forces and torques from the asymmetric reflection and thermal re-radiation of sunlight are primary mechanisms that govern the…

地球与行星天体物理 · 物理学 2015-06-12 Ben Rozitis , Simon F. Green

The rotation states of kilometer sized near earth asteroids are known to be affected by the YORP effect. In a related effect, Binary YORP (BYORP) the orbital properties of a binary asteroid evolves under a radiation effect mostly acting on…

地球与行星天体物理 · 物理学 2011-01-17 Elad Steinberg , Re'em Sari

The binary Yarkovsky effect on the secondary asteroid (BYS) was recently discovered to influence binary asteroid systems by pushing the secondary asteroid toward a synchronous orbit on a short timescale. However, the binary Yarkovsky effect…

地球与行星天体物理 · 物理学 2024-12-02 Wen-Han Zhou

The Yarkovsky effect plays an important role in the motions of small celestial bodies. Increasingly improving observations bring the need of high-accuracy modelling of the effect. Using a multiphysics software COMSOL, we model the diurnal…

地球与行星天体物理 · 物理学 2022-10-12 Yang-Bo Xu , Li-Yong Zhou , Hejiu Hui , Jian-Yang Li

We present an adaptation of the ATPM to simultaneously predict the Yarkovsky and YORP effects in the presence of global self-heating that occurs within the large concavities of irregularly shaped asteroids, which has been neglected or…

地球与行星天体物理 · 物理学 2015-06-15 Ben Rozitis , Simon F. Green

We explore the Yarkovsky effect on small binary asteroids. While significant attention has been given to the binary YORP effect, the Yarkovsky effect is often overlooked. We develop an analytical model for the binary Yarkovsky effect,…

地球与行星天体物理 · 物理学 2024-12-03 Wen-Han Zhou , David Vokrouhlicky , Masanori Kanamaru , Harrison Agrusa , Petr Pravec , Marco Delbo , Patrick Michel

Aims. We investigate the influence of the Yarkovsky force on the long-term orbital evolution of Jupiter Trojan asteroids. Methods. Clones of the observed population with different sizes and different thermal properties were numerically…

地球与行星天体物理 · 物理学 2019-10-16 Stephan Hellmich , Stefano Mottola , Gerhard Hahn , Ekkehard Kührt , Detlef de Niem

The rotation states of small asteroids are affected by a net torque arising from an anisotropic sunlight reflection and thermal radiation from the asteroids' surfaces. On long timescales, this so-called YORP effect can change asteroid spin…

The population of Earth-impacting meteoroids and its size-dependent orbital elements are key to understanding the origin of meteorites and informing on planetary defence efforts. Outstanding questions include the role of collisions in…

Asteroids are leftover pieces from the era of planet formation that help us understand conditions in the early Solar System. Unlike larger planetary bodies that were subject to global thermal modification during and subsequent to their…

地球与行星天体物理 · 物理学 2009-06-25 Kevin J. Walsh , Patrick Michel , Derek C. Richardson

The Yarkovsky--O'Keefe--Radzievskii--Paddack (YORP) effect governs the spin evolution of small asteroids. The axial component of YORP, which alters the rotation rate of the asteroid, is mostly independent of its thermal inertia, while the…

地球与行星天体物理 · 物理学 2021-06-23 Oleksiy Golubov , Vladyslav Unukovych , Daniel J. Scheeres

The implication of small amounts of cohesion within relatively small rubble pile asteroids is investigated with regard to their evolution under the persistent presence of the YORP effect. We find that below a characteristic size, which is a…

地球与行星天体物理 · 物理学 2018-02-28 D. J. Scheeres

The Yarkovsky effect is a thermal process acting upon the orbits of small celestial bodies, which can cause these orbits to slowly expand or contract with time. The effect is subtle (da/dt ~ 10^-4 au/My for a 1 km diameter object) and is…

地球与行星天体物理 · 物理学 2020-02-10 Adam H. Greenberg , Jean-Luc Margot , Ashok K. Verma , Patrick A. Taylor , Susan E. Hodge
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