Details

Autor(en) / Beteiligte

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

Titel

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

Ist Teil von

• Science (American Association for the Advancement of Science), 2003-12, Vol.302 (5651), p.1739-1742

Ort / Verlag

Washington, DC: American Association for the Advancement of Science

Erscheinungsjahr

2003

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.