Physical Model of Asteroid 1620 Geographos from Radar and Optical Data

Details Physical Model of Asteroid 1620 Geographos from Radar and Optical Data Physical Model of Asteroid 1620 Geographos from Radar and Optical Data

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999icar..140..369h&link_type=abstract

Icarus, Volume 140, Issue 2, pp. 369-378 (1999).

Physics

25

Scientific paper

We develop a physical model of asteroid 1620 Geographos using Goldstone delay-Doppler radar images obtained August 1994 (Ostro et al. 1996, Icarus 121, 46-66) with resolution as fine as 75 m, and optical lightcurves obtained in 1969, 1983, and 1993-1994 (Magnusson et al. 1996, Icarus 123, 227-244). The data set admits a geometric ambiguity that precludes a unique model. Within this constraint, our model has maximum dimensions of (5.0, 2.0, 2.1)+/-0.15 km and a volume of <=8.8 km3, equivalent to a sphere of <=2.56 km diameter. The radar equivalent spherical albedo is >=0.12. The photometric solution provides Hapke parameters w>=0.22, g=-0.34+/-0.10, and θ=25+/-10° with assumed values h=0.02 and B0=1.32. The spin state solution does not differ significantly from that of Magnusson et al. having λ=55+/-6°, β=-46+/-4°, and P=5.2233270+/-0.00000072 h. We identify seven main features in the delay-Doppler images and their corresponding locations on the model.

Affiliated with

Also associated with

No associations

Rating

Physical Model of Asteroid 1620 Geographos from Radar and Optical Data 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 Physical Model of Asteroid 1620 Geographos from Radar and Optical Data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Physical Model of Asteroid 1620 Geographos from Radar and Optical Data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1267458