The occultation of KME 17 by Uranus and its rings

Details The occultation of KME 17 by Uranus and its rings The occultation of KME 17 by Uranus and its rings

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987icar...71...91e&link_type=abstract

Icarus (ISSN 0019-1035), vol. 71, July 1987, p. 91-102.

Astronomy and Astrophysics

Astronomy

6

Astronomical Models, Astronomical Spectroscopy, Infrared Spectra, Stellar Occultation, Uranus Rings, Planetary Temperature, Uranus Atmosphere, Uranus, Rings, Occultations, Astronomy, Earth-Based Observations, Data, Telescope Methods, Numerical Methods, Photometry, Equipment, Diagrams, Parameters, Satellites, 1986U1R, Atmosphere, Temperature

Scientific paper

The occultation of KME 17 by Uranus and its rings was observed with the 1.8-m telescope at SAAO through a K filter with an InSb detector on 25 March 1983. Immersion of the nine main rings and the emersion of rings, 5, 4, α, and β were recorded in the nonchopping mode. A diffracted square-well model was fitted to the data, and the midtime, width, and equivalent depth were determined for each profile. The profile model also includes the diameter of the occulted star as a free parameter. The immersion and emersion atmospheric events give mean temperatures of 166±15 and 149±15K within the pressure altitude range 1 - 10 μbar. Photometry in the JHKL bands for KME 17 and other stars previously occulted by Uranian rings is presented.

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