Radar observations of asteroid 1580 Betulia |
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| Authors: | Gordon H Pettengill Steven J Ostro Irwin I Shapiro Brian G Marsden Donald B Campbell |
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| Institution: | Department of Earth and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA;Smithsonian Astrophysical Observatory, Cambridge, Massachusetts 02138, USA |
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| Abstract: | Radar observations of the asteroid 1580 Betulia, made at a wavelength of 12.6 cm, show a mean radar cross section of 2.2 ± 0.8 km2 and a total spectral bandwidth of 26.5 ± 1.5 Hz. Combining our bandwidth measurements with the optically determined rotation period sets a lower limit to the asteroid's radius of 2.9 ± 0.2 km. |
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