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Proposal Identication No.: R1668 Date Received: 2002-May-31 17:55:09
Technical Page
Proposal Type: Regular
General Category: Planetary Radar
Observation Category: Solar System
Total Time Requested: 36 Hours
Proposal Title: S-Band Radar Observations of Iapetus
ABSTRACT:
We are requesting eight days of S-band radar observations of Saturn's moon Iapetus to measure the bulk radar
scattering properties of its leading and trailing hemispheres. The optical albedo of these regions varies by more
than a factor of 10, with the latter composed of bright water ice and the former covered with a very dark, unknown
material. Comparison of the radar properties of these two hemispheres will provide new clues toward the
identication of the dark material and its origin. This work is the logical follow-up to our initial detection of the
bright hemisphere during last Saturn opposition, which indicated that Iapetus' scattering properties are unlike
those of the icy satellites of the Jupiter system. The proposed eight days are divided into two sessions separated by
40 days, or half Iapetus' orbital period.
Name Institution E-mail Phone Student
Greg Black NRAO gblack@nrao.edu 434-296-0259 no
Service Observing Request Remot e Observing Request
X None X No
All of the observing run. Maybe
Part of the observing run. Yes
Queue Observing
Instrument Setup
S-Band radar S-band receiver
Atmospheric Observation Instruments:
Special Equipment or setup: none
RFI Considerations
Frequency Ranges Planned
1