A Recent Radar Observation of Asteroid 1566 Icarus

Details A Recent Radar Observation of Asteroid 1566 Icarus A Recent Radar Observation of Asteroid 1566 Icarus

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998dps....30.0704m&link_type=abstract

American Astronomical Society, DPS meeting #30, #07.04; Bulletin of the American Astronomical Society, Vol. 30, p.1024

Astronomy and Astrophysics

Astronomy

Scientific paper

We report Doppler-only radar observations of 1566 Icarus at Goldstone at a transmitter frequency of 8510 MHz (3.5 cm wavelength) during 1996 June 8-10, the first radar detection of the object since 1968. Optimally filtered and folded spectra achieve a maximum opposite-circular (OC) polarization signal-to-noise ratio of about 10 and help to constrain Icarus' physical properties. We obtain an OC radar cross section of 0.05 square kilometers (+/- 35%), which is about one-half that estimated by Goldstein (1969, Icarus 10, 430) and by Pettengill et al. (1969, Icarus 10, 432), and a circular polarization ratio of 0.5 +/- 0.2. We analyze the echo power spectrum with a model incorporating the echo bandwidth B and a spectral shape parameter n, yielding a coupled constraint between B and n. We adopt 25 Hz as the lower bound on B, which gives a lower bound on the maximum pole-on breadth of about 0.6 km, and upper bounds on the radar and optical albedos that are consistent with Icarus' QS-class taxonomy. The observed circular polarization ratio indicates a very rough near-surface at spatial scales near the radar wavelength.

Affiliated with

Also associated with

No associations

Rating

A Recent Radar Observation of Asteroid 1566 Icarus does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A Recent Radar Observation of Asteroid 1566 Icarus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Recent Radar Observation of Asteroid 1566 Icarus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-814804