Measuring the diameter of Juno

Details Measuring the diameter of Juno Measuring the diameter of Juno

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980s%26t....59..276d&link_type=abstract

Sky and Telescope, vol. 59, Apr. 1980, p. 276-278.

Astronomy and Astrophysics

Astronomy

1

Asteroids, Astrometry, Astronomical Photometry, Dimensional Measurement, Albedo, Diameters, Electrophotometers, Solar Eclipses, Stellar Occultation, Telescopes

Scientific paper

The determination of the diameter of the asteroid Juno upon its occultation of the star SAO 115946 in December, 1979 is discussed. The times of immersion and emersion of the star behind the minor planet were measured by a set of six portable telescopes, including four two-channel photoelectric photometer systems based on a 14-inch telescope, distributed from north of the expected northern limit of the occultation path to the southern limit through southern California. Observations were obtained from the four southern field stations, and indicate the disk of Juno to be elliptical, with major and minor axes of 293 and 252 km, respectively. A simultaneous search for any possible satellites of Juno did not yield any positive results. It is concluded that the method employed represents an effective means for the accurate determination of asteroid sizes and shapes.

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