Calibration of the radiometric asteroid scale using occultation diameters |
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| Authors: | RHamilton Brown David Morrison CM Telesco William E Brunk |
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| Institution: | Institute for Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA;Office of Space Science, NASA Headquarters, Washington, DC 20546, USA |
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| Abstract: | We report a new approach to the calibration of the radiometric asteroid scale using the recent accurate occultation measurements of the diameters of 2 Pallas and 3 Juno, and the Voyager diameter of J4 Callisto, and new infrared photometry of these objects obtained with the NASA 3-m Infrared Telescope Facility. This calibration is internally consistent to better than 5% and probably has an absolute accuracy of ±5%. A revision of the TRIAD radiometric diameters downward is required to bring them into agreement with the new calibration. |
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