Physics – Optics
Scientific paper
Jan 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981aj.....86..121r&link_type=abstract
Astronomical Journal, vol. 86, Jan. 1981, p. 121-126. NASA-NSF-supported research.
Physics
Optics
5
Asteroids, Astrometry, Astronomical Photometry, Stellar Occultation, Atmospheric Optics, Data Reduction, Light Curve, Scintillation
Scientific paper
The occultation of SAO 115946 by Juno on 11 December 1979 was observed from two sites in southern California with portable two-color, high-speed photometers. A composite light curve was constructed from the data by suitable scaling of individual observations, using an astrometric solution for the location of the contact points on Juno's limb. The preliminary astrometric solution used here has a semiminor axis of 118 km and a semimajor axis of 145 km at position angle 75.5 deg. The composite light curve is compatible with a stellar radius of (1.6 + or - 0.8) x 10 to the -4th arcsec, consistent with the radius estimated from the color and visual magnitude. There is no evidence for any companions to SAO 115946 or Juno. The prospects for use of asteroid occultations to determine stellar radii and asteroid surface slopes are discussed as compared with the lunar occultation technique.
Hubbard William B.
Lebofsky Larry A.
Reitsema Harold J.
Zellner Ben H.
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