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  • 1
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    Detection of lambda = 2 cm emission from minor planet 704 Interamnia (1987)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Results are presented from a study of the 2 cm natural radio emissions from the class U asteroid 704 Interamnia. The study was performed with the NRAO VLA using 26 antennas in a compact hybrid configuration with baselengths from 0.1-2.2 km. The IF scans were centered at 14.97 GHz and 14.92 GHz. A brightness temperature plot is provided for 2 AU distance, assuming a 338 km diam for the asteroid. The scans revealed a surface dust layer at least 3 cm thick. Comparisons with spectra of 15 Eunomia, another rapidly rotating minor planet with a similar diameter reveals that this second object also has a surface dust layer a few centimeters thick.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: Icarus (ISSN 0019-1035); 69; 29-32
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Space missions to comets (1979)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The broad impact of a cometary mission is assessed with particular emphasis on scientific interest in a fly-by mission to Halley's comet and a rendezvous with Tempel 2. Scientific results, speculations, and future plans are discussed.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA-CP-2089 , Oct 01, 1977; Greenbelt, MD; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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