Observations Of Eclipses, Occultations, And Non-events Of Uranus Satellites

Details Observations Of Eclipses, Occultations, And Non-events Of Uranus Satellites Observations Of Eclipses, Occultations, And Non-events Of Uranus Satellites

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21430503t&link_type=abstract

American Astronomical Society, AAS Meeting #214, #305.03; Bulletin of the American Astronomical Society, Vol. 41, p.722

Astronomy and Astrophysics

Astronomy

Scientific paper

A series of Uranus satellite observations from 2006 October to 2007 November was made as part of a telescope commissioning program that contributed to a larger set of observations that will likely lead to the greatest incremental improvement of Uranus satellite ephemerides and system constraints since the 1986 Voyager 2 flyby. Baseline image samples testing different exposure lengths were made using the FTN telescope in 2006 October as part of the commissioning of the FTN telescope on Haleakala, Hawaii. Then from 2007 May to November a series of "mutual events” (eclipses and occultations) of the satellites were observed in a campaign with the Ellinogermaniki Agogi School Observatory in Athens, Greece, the Gerostathopoulion Observatory of the University of Athens, in Athens, and the Southern African Large Telescope in Sutherland, South Africa. Significant discrepancies between the observed and predicted events show that while the previous Voyager-era analytical ephemeris was good it can be improved by the set of high-precision intersatellite positions obtained through these observations. The demonstration of the use of a campaign of small to large aperture telescopes also shows how multiple sized small to medium aperture telescopes can be effectively combined into a global network of telescopes.

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