Physical and dynamical properties of the main belt triple Asteroid (87) Sylvia

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10286141" target="_blank" >RIV/00216208:11320/14:10286141 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.icarus.2014.05.046" target="_blank" >http://dx.doi.org/10.1016/j.icarus.2014.05.046</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.icarus.2014.05.046" target="_blank" >10.1016/j.icarus.2014.05.046</a>

Result language
angličtina
Original language name
Physical and dynamical properties of the main belt triple Asteroid (87) Sylvia
Original language description
We present the analysis of high angular resolution observations of the triple Asteroid (87) Sylvia collected with three 8-10 m class telescopes (Keck, VLT, Gemini North) and the Hubble Space Telescope. The moons' mutual orbits were derived individually using a purely Keplerian model. We computed the position of Romulus, the outer moon of the system, at the epoch of a recent stellar occultation which was successfully observed at less than 15 km from our predicted position, within the uncertainty of our model. The occultation data revealed that the Moon, with a surface-area equivalent diameter D-s = 23.1 +/- 0.7 km, is strongly elongated (axes ratio of 2.7 +/- 0.3), significantly more than single asteroids of similar size in the main-belt. We concluded that its shape is probably affected by the tides from the primary. A new shape model of the primary was calculated combining adaptive-optics observations with this occultation and 40 archived light-curves recorded since 1978. The differenc
Czech name
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Czech description
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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
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
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

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