The diameter of Juno from its occultation of AG + 0 deg 1022

Details The diameter of Juno from its occultation of AG + 0 deg 1022 The diameter of Juno from its occultation of AG + 0 deg 1022

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981aj.....86..306m&link_type=abstract

Astronomical Journal, vol. 86, Feb. 1981, p. 306-313.

Astronomy and Astrophysics

Astronomy

40

Albedo, Asteroids, Diameters, Ellipticity, Size Determination, Stellar Occultation, Astrometry, Electrophotometers, Light Curve, Submerging, Visual Observation

Scientific paper

The occultation on Dec. 11, 1979, of AG + 0 deg 1022 by Juno was observed photoelectrically from 15 sites distributed across the occultation track. The observations are well represented by a mean elliptical limb profile having semimajor and semiminor axes of 145.2 + or 0.8 and 122.8 + or - 1.9 km, respectively. The corresponding effective diameter of Juno is 267 + or - 5 km, where the uncertainty has been conservatively increased to reflect the presence of limb irregularities clearly seen in the observations. Published radiometric and polarimetric diameters for Juno are 6% to 7% smaller than the occultation result. No secondary occultations attributable to possible satellites of Juno were recorded at any of 23 photoelectrically equipped observing sites.

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