Radar investigation of asteroids / Steven J. Ostro, principal investigator.
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|Location||Call Number / Copy Notes||Barcode||Shelving Location||Status||Due Date|
|Indiana State Library - Indianapolis||NAS 1.26:175350 (Text)||965265-1001||General Federal documents||Available||-|
- Physical Description: 10 unnumbered pages : illustrations ; 28 cm.
- Publisher: Ithaca, N.Y. : Center for Radiophysics and Space Research, Cornell University ; 
"Prepared July 1984."
|Type of Report and Period Covered Note:||
Semi-annual status report; July 1, 1983 - December 31, 1983
"For 80 Sappho, 356 Liguria, 694 Ekard, and 2340 Hathor, data were taken simultaneously in the same sense of circular polarization as transmitted (SC) as well as in the opposite (OC) sense. Graphs show the average OC and SC radar echo power spectra soothed to a resolution of EFB Hz and plotted against Doppler frequency. Radar observations of the peculiar object 2201 Oljato reveal an unusual set of echo power spectra. The albedo and polarization ratio remain fairly constant but the bandwidths range from approximately 0.8 Hz to 1.4 Hz and the spectral shapes vary dramatically. Echo characteristics within any one date's approximately 2.5-hr observation period do not fluctuate very much. Laboratory measurements of the radar frequency electrical properties of particulate metal-plus-silicate mixtures can be combined with radar albedo estimates to constrain the bulk density and metal weight, fraction in a hypothetical asteroid regolith having the same particle size distribution as lab samples"--NTIS abstract.
Microfiche. [Washington, D.C. : National Aeronautics and Space Administration], 1984. 1 microfiche.
|Funding Information Note:||
NASA grant NAGW-116
Search for related items by subject
|Subject:||Asteroids > Observations.
Radar in astronomy.
Radar cross sections.