Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008an....329..567b&link_type=abstract
Astronomische Nachrichten, Vol.329, Issue 6, p.567-572
Astronomy and Astrophysics
Astronomy
3
Stars: Fundamental Parameters, Stars: Individual (Ogle-Tr-10), Planetary Systems, Astrometry, Occultations, Planets And Satellites: Individual (Miranda, Oberon, Uranus), Techniques: Photometric
Scientific paper
Observations of the predicted occultation between the satellites Miranda and Oberon were performed on 2007 July 30. Data analysis reveals that the predicted magnitude drop for this phenomenon was overestimated and we establish an upper limit of 0\fm05 for the phenomenon, perhaps due to a non-lambertian limb scattering. The new astrometry obtained from this run is in good agreement with the LA06 numerical model and these new data will improve the dynamical models of the Uranus system. The paper concludes with an uncertainty analysis on the parameters for the event, determined by the uncertainty of the magnitude drop of about 0.04 mag, and the difficulty to observe mutual phenomena between satellites in the Uranian system.
Arlot Jean-Eudes
Binzel Richard P.
Birlan Mirel
Bus Schelte J.
Colas Francois
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