Direct Detection of the Yarkovsky Effect by Radar Ranging to Asteroid 6489 Golevka

Steven R. Chesley; Steven J. Ostro; David Vokrouhlický; David Čapek; Jon D. Giorgini; Michael C. Nolan; Jean Luc Margot; Alice A. Hine; Lance A.M. Benner; Alan B. Chamberlin

doi:10.1126/science.1091452

Direct Detection of the Yarkovsky Effect by Radar Ranging to Asteroid 6489 Golevka

Steven R. Chesley, Steven J. Ostro, David Vokrouhlický, David Čapek, Jon D. Giorgini, Michael C. Nolan, Jean Luc Margot, Alice A. Hine, Lance A.M. Benner, Alan B. Chamberlin

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Abstract

Radar ranging from Arecibo, Puerto Rico, to the 0.5-kilometer near-Earth asteroid 6489 Golevka unambiguously reveals a small nongravitational acceleration caused by the anisotropic thermal emission of absorbed sunlight. The magnitude of this perturbation, known as the Yarkovsky effect, is a function of the asteroid's mass and surface thermal characteristics. Direct detection of the Yarkovsky effect on asteroids will help constrain their physical properties, such as bulk density, and refine their orbital paths. Based on the strength of the detected perturbation, we estimate the bulk density of Golevka to be 2.7_-0.6^+0.4 grams per cubic centimeter.

Original language	English (US)
Pages (from-to)	1739-1742
Number of pages	4
Journal	Science
Volume	302
Issue number	5651
DOIs	https://doi.org/10.1126/science.1091452
State	Published - Dec 6 2003
Externally published	Yes

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title = "Direct Detection of the Yarkovsky Effect by Radar Ranging to Asteroid 6489 Golevka",

abstract = "Radar ranging from Arecibo, Puerto Rico, to the 0.5-kilometer near-Earth asteroid 6489 Golevka unambiguously reveals a small nongravitational acceleration caused by the anisotropic thermal emission of absorbed sunlight. The magnitude of this perturbation, known as the Yarkovsky effect, is a function of the asteroid's mass and surface thermal characteristics. Direct detection of the Yarkovsky effect on asteroids will help constrain their physical properties, such as bulk density, and refine their orbital paths. Based on the strength of the detected perturbation, we estimate the bulk density of Golevka to be 2.7-0.6+0.4 grams per cubic centimeter.",

author = "Chesley, {Steven R.} and Ostro, {Steven J.} and David Vokrouhlick{\'y} and David {\v C}apek and Giorgini, {Jon D.} and Nolan, {Michael C.} and Margot, {Jean Luc} and Hine, {Alice A.} and Benner, {Lance A.M.} and Chamberlin, {Alan B.}",

year = "2003",

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doi = "10.1126/science.1091452",

language = "English (US)",

volume = "302",

pages = "1739--1742",

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publisher = "American Association for the Advancement of Science",

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TY - JOUR

T1 - Direct Detection of the Yarkovsky Effect by Radar Ranging to Asteroid 6489 Golevka

AU - Chesley, Steven R.

AU - Ostro, Steven J.

AU - Vokrouhlický, David

AU - Čapek, David

AU - Giorgini, Jon D.

AU - Nolan, Michael C.

AU - Margot, Jean Luc

AU - Hine, Alice A.

AU - Benner, Lance A.M.

AU - Chamberlin, Alan B.

PY - 2003/12/6

Y1 - 2003/12/6

N2 - Radar ranging from Arecibo, Puerto Rico, to the 0.5-kilometer near-Earth asteroid 6489 Golevka unambiguously reveals a small nongravitational acceleration caused by the anisotropic thermal emission of absorbed sunlight. The magnitude of this perturbation, known as the Yarkovsky effect, is a function of the asteroid's mass and surface thermal characteristics. Direct detection of the Yarkovsky effect on asteroids will help constrain their physical properties, such as bulk density, and refine their orbital paths. Based on the strength of the detected perturbation, we estimate the bulk density of Golevka to be 2.7-0.6+0.4 grams per cubic centimeter.

AB - Radar ranging from Arecibo, Puerto Rico, to the 0.5-kilometer near-Earth asteroid 6489 Golevka unambiguously reveals a small nongravitational acceleration caused by the anisotropic thermal emission of absorbed sunlight. The magnitude of this perturbation, known as the Yarkovsky effect, is a function of the asteroid's mass and surface thermal characteristics. Direct detection of the Yarkovsky effect on asteroids will help constrain their physical properties, such as bulk density, and refine their orbital paths. Based on the strength of the detected perturbation, we estimate the bulk density of Golevka to be 2.7-0.6+0.4 grams per cubic centimeter.

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Direct Detection of the Yarkovsky Effect by Radar Ranging to Asteroid 6489 Golevka

Abstract

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