The Yarkovsky thermal force on small asteroids and their fragments. Choosing the right albedo

Details The Yarkovsky thermal force on small asteroids and their fragments. Choosing the right albedo The Yarkovsky thermal force on small asteroids and their fragments. Choosing the right albedo

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...371..350v&link_type=abstract

Astronomy and Astrophysics, v.371, p.350-353 (2001)

Astronomy and Astrophysics

Astrophysics

7

Celestial Mechanics, Minor Planets, Asteroids, Meteoroids

Scientific paper

Thermal (Yarkovsky) forces acting on small bodies in the solar system have been shown to play an important role in the the delivery of meteoroids and km-sized asteroids to Earth. So far, several aspects of the Yarkovsky force have been studied in some detail, including non-linear effects of the heat diffusion problem, non-sphericity and the layered-structure of the objects. In this paper, we address the concept of optical absorptivity. We find that the best formulation of the Yarkovsky effect uses the first two moment-integrals of an object's hemispheric albedo. A useful approximation of these albedo parameters is an object's Bond albedo.

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