Orbit and bulk density of the OSIRIS-REx target Asteroid (101955) Bennu

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10287745" target="_blank" >RIV/00216208:11320/14:10287745 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.icarus.2014.02.020" target="_blank" >http://dx.doi.org/10.1016/j.icarus.2014.02.020</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.icarus.2014.02.020" target="_blank" >10.1016/j.icarus.2014.02.020</a>

Result language
angličtina
Original language name
Orbit and bulk density of the OSIRIS-REx target Asteroid (101955) Bennu
Original language description
The target asteroid of the OSIRIS-REx asteroid sample return mission, (101955) Bennu (formerly 1999 RQ(36)), is a half-kilometer near-Earth asteroid with an extraordinarily well constrained orbit. An extensive data set of optical astrometry from 1999 to2013 and high-quality radar delay measurements to Bennu in 1999, 2005, and 2011 reveal the action of the Yarkovsky effect, with a mean semimajor axis drift rate da/dt = (-19.0 0.1) x 10(-4) au/Myr or 284 +/- 1.5 m/year. The accuracy of this result depends critically on the fidelity of the observational and dynamical model. As an example, neglecting the relativistic perturbations of the Earth during close approaches affects the orbit with 3 sigma significance in da/dt. The orbital deviations from purelygravitational dynamics allow us to deduce the acceleration of the Yarkovsky effect, while the known physical characterization of Bennu allows us to independently model the force due to thermal emissions. The combination of these two analy
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
—

Project
<a href="/en/project/GA13-01308S" target="_blank" >GA13-01308S: Dynamics of small bodies in the solar system</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)