NASA NTRS · 19820035946
Radar observations of Apollo
Abstract
Radar observations of the asteroid Apollo, at 3.5 cm wavelength, indicate a radius of 600 m and a rotation period of 3.0 hr. The data are consistent with a rough surface of either hard ice or of regolith softened rock.
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Goldstein, R. M., Jurgens, R. F., Yeomans, D. K.. 1981-10-01. Radar observations of Apollo. https://ntrs.nasa.gov/citations/19820035946
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