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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Icarus

ISSN

0019-1035

e-ISSN

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Svazek periodika

239

Číslo periodika v rámci svazku

září

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

118-130

Kód UT WoS článku

000339782700011

EID výsledku v databázi Scopus

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