Observational detection of eight mutual eclipses and occultations between the satellites of Uranus
A. A. Christou, F. Lewis, P. Roche, Y. Hashimoto, D. O'Donoghue, H., Worters, D. A. H. Buckley, T. Michalowski, D. J. Asher, A. Bitsaki, A., Psalidas, V. Tsamis, K. N. Gourgouliatos, A. Liakos, M. G. Hidas, T. M., Brown

TL;DR
This study observed eight mutual eclipses and occultations among Uranus's satellites during 2007, providing precise astrometric data and insights into satellite properties, with implications for understanding the Uranian system.
Contribution
First detailed observational analysis of mutual events among Uranus's satellites during 2007 equinox, improving satellite position accuracy and revealing discrepancies with predictions.
Findings
Eight clear mutual events detected and modeled.
Generated intersatellite positions with <0.01 arcsec uncertainty.
Observed systematic lag in event timings compared to predictions.
Abstract
We carried out observations, with five different instruments ranging in aperture from 0.4m to 10m, of the satellites of Uranus during that planet's 2007 Equinox. Our observations covered specific intervals of time when mutual eclipses and occultations were predicted. The observations were carried out in the near-infrared part of the spectrum to mitigate the glare from the planet. Frames were acquired at rates > 1/min. Following modelling and subtraction of the planetary source from these frames, differential aperture photometry was carried out on the satellite pairs involved in the predicted events. In all cases but one, nearby bright satellites were used as reference sources. We have obtained fifteen individual lightcurves, eight of which show a clear drop in the flux from the satellite pair, indicating that a mutual event took place. Three of these involve the faint satellite…
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