Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982icar...52..188b&link_type=abstract
Icarus, vol. 52, Oct. 1982, p. 188-195.
Astronomy and Astrophysics
Astronomy
34
Asteroids, Astrometry, Astronomical Photometry, Infrared Radiometers, Radiometric Correction, Albedo, Calibrating, Callisto, Photometers, Asteroids, Calibration, Occultations, Diameters, Radiometry, Infrared, Pallas Asteroid, Juno Asteroid, Callisto, Jupiter, Satellites, Radius, Photometry, Wavelengths, Infrared Telescopic Facility, Techniques, Procedure, Observations, Data, Ceres Asteroid, Hygeia Asteroid, Comparisons
Scientific paper
The paper describes a new approach to the calibration of the radiometric asteroid scale, which relies on recent accurate occultation measurements of the diameters of 2 Pallas (Wasserman et al., 1979) and 3 Juno (Millis et al., 1981), and the Voyager diameter of J4 Callisto, as well as IR photometry of these objects obtained with the NASA 3-m Infrared Telescope Facility. It is shown that this calibration is internally consistent to better than 5%, and probably has an absolute accuracy of + or - 5%. It is noted that a revision of the TRIAD radiometric diameters downward is required to bring them into agreement with the new calibration.
Brown Harvey R.
Brunk W. E.
Morrison Douglas
Telesco Charles M.
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