Extreme sensitivity of the YORP effect to small-scale topography

  title={Extreme sensitivity of the YORP effect to small-scale topography},
  author={Thomas S. Statler},
  • T. Statler
  • Published 5 March 2009
  • Physics, Geology
  • Icarus

The Dynamical Complexity of Surface Mass Shedding from a Top-shaped Asteroid Near the Critical Spin Limit

The regolith transport near the surface of an asteroid is inherently sensitive to the local topography. In this paper, conditions of surface mass shedding and the subsequent evolution of the shedding

Analytic theory for the tangential YORP produced by the asteroid regolith

Context. The tangential YORP e ff ect is a radiation pressure torque produced by asymmetric thermal emission by structures on the asteroid surface. Previous works considered these structures to be

The strength and detectability of the YORP effect in near-Earth asteroids: a statistical approach

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

The influence of global self-heating on the Yarkovsky and YORP effects

In addition to collisions and gravitational forces, there is a growing amount of evidence that photon recoil forces from the asymmetric reflection and thermal re-radiation of absorbed sunlight are


We present the first self-consistent simulations of the coupled spin-shape evolution of small gravitational aggregates under the influence of the YORP effect. Because of YORP’s sensitivity to surface

Rotationally induced failure of irregularly shaped asteroids

Yarkovsky and YORP Effects in Dynamics of Small Bodies of the Solar System

In this thesis, we study the influence of non-gravitational perturbations induced by the Yarkovsky/YORP effect and solar radiation pressure (SRP) on the orbital evolution of selected asteroids,



Analytic Theory of the YORP Effect for Near-Spherical Objects

The YORP effect is produced when the surface of a small object in interplanetary space is heated by sunlight and reradiates the absorbed energy in thermal wavelengths. The absorbed, reflected, and

Eros: Shape, Topography, and Slope Processes

Stereogrammetric measurement of the shape of Eros using images obtained by NEAR's Multispectral Imager provides a survey of the major topographic features and slope processes on this asteroid. This

Cratering on Mathilde

Abstract Crater populations on Mathilde are assessed from NEAR flyby images. Small to intermediate-sized craters (1/2 to 5 km diameter) approach saturation equilibrium spatial densities and exhibit a

Impact History of Eros: Craters and Boulders

Abstract Preliminary measurements of craters and boulders have been made in various locations on Eros from images acquired during the first nine months of NEAR Shoemaker's orbital mission, including

Debiased Orbital and Absolute Magnitude Distribution of the Near-Earth Objects

The orbital and absolute magnitude distribution of the near-Earth objects (NEOs) is difficult to compute, partly because only a modest fraction of the entire NEO population has been discovered so

Mathilde: Size, Shape, and Geology

Abstract The Near Earth Asteroid Rendezvous (NEAR) spacecraft images of C-type asteroid Mathilde show it to have a mean radius of 26.5±1.3 km. The asteroid is geologically distinguished by its low

Collisional History of Gaspra

Abstract Interpretation of the impact record on Asteroid 951 Gaspra requires understanding of the effects of collisions on a target body of Gaspra's size and shape. Recent hydrocode models show that

Cratering on Gaspra

Abstract Galileo flyby images of 951 Gaspra show a crater population dominated by fresh craters several hundred meters in diameter and smaller. They must represent a production population because

Imaging of Small-Scale Features on 433 Eros from NEAR: Evidence for a Complex Regolith

The subdued appearance of craters of different diameters and the variety of blocks and different degrees of their burial suggest that ejecta from several impact events blanketed the region imaged at closest approach and led to the building up of a substantial and complex regolith consisting of fine materials and abundant meter-sized blocks.