Počet záznamů: 1  

An advanced multipole model of the (130) Elektra quadruple system

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    0576739 - ASÚ 2024 RIV FR eng J - Článek v odborném periodiku
    Fuksa, M. - Broz, M. - Hanuš, J. - Ferrais, M. - Fatka, Petr - Vernazza, P.
    An advanced multipole model of the (130) Elektra quadruple system.
    Astronomy & Astrophysics. Roč. 677, September (2023), č. článku A189. ISSN 0004-6361. E-ISSN 1432-0746
    Grant CEP: GA ČR(CZ) Ga21-11058S
    Institucionální podpora: RVO:67985815
    Klíčová slova: minor planets * asteroids * planets and satellites
    Obor OECD: Astronomy (including astrophysics,space science)
    Impakt faktor: 6.5, rok: 2022
    Způsob publikování: Open access

    We aim to characterise the irregular shape of Elektra and construct a complete orbital model of its unique moon system. We applied the All-Data Asteroid Modelling (ADAM) algorithm to 60 light curves of Elektra, including our new measurements, 46 adaptive-optics (AO) images obtained by the VLT/SPHERE and Keck/Nirc2 instruments, and two stellar occultation profiles. For the orbital model, we used an advanced N-body integrator, which includes a multipole expansion of the central body (with terms up to the order ℓ = 6), mutual perturbations, internal tides, and the external tide of the Sun acting on the orbits. We fitted the astrometry measured with respect to the central body and also relatively, with respect to the moons themselves.
    Trvalý link: https://hdl.handle.net/11104/0346159

     
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