The 2007 High Latitude Radio Occultations Of Cassini By Titan

Details The 2007 High Latitude Radio Occultations Of Cassini By Titan The 2007 High Latitude Radio Occultations Of Cassini By Titan

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dps....39.5607s&link_type=abstract

American Astronomical Society, DPS meeting #39, #56.07; Bulletin of the American Astronomical Society, Vol. 39, p.529

Astronomy and Astrophysics

Astronomy

Scientific paper

Two radio occultations of Cassini by Titan occurred during 2007, the last occultations during the Cassini primary mission. Both 2007 occultations profiled the atmosphere of Titan at higher latitudes than the initial two Titan occultations in 2006. The orbit 41 occultation that occurred on March 26, 2007 (T27), probed the atmosphere at 69 S on ingress and 52 N on egress, and was observed at the Madrid and Goldstone DSN antennas in the S, X, and Ka bands. The orbit 45 occultation on May 28, 2007 (T31), probed the atmosphere at 74 S on ingress and 74 N on ingress, and was also observed at Madrid and Goldstone in the same bands. Our primary results will be the profiles of the temperature as a function of altitude and pressure obtained from the occultation data. We will also discuss some of the sources of error (primarily the ephemeris) that limit the accuracy of the derived temperature profiles. We will compare with previous radio occultation observations of the atmosphere of Titan (the two prior Cassini occultations and the Voyager 1 occultation), paying particular attention to the lowest few km of the atmosphere.

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