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Proposal Identication No.: R1539 Date Received: 2001-Jun-01 15:33:25
Technical Page
Proposal Type: Regular
General Category: Planetary Radar
Sub-Category: Radar
Observation Category: Solar System
Total Time Requested: 88 Hours
Proposal Title: Radar Imaging of Asteroids 4 Vesta and 654 Zelinda in 2001-2002
ABSTRACT:
We propose delay-Doppler radar imaging of main-belt asteroids 4 Vesta and 654 Zelinda in order to derive otherwise
unavailable information about sizes, shapes, topography, small-scale morphology, and near-surface bulk density. For
Vesta, thirteen nights of observing should yield 10-km-resolution maps of radar re ectivity and decimeter-scale
roughness, which can be combined with the HST-based shape model and geological map to constrain the nature
and origin of the surface. Previously obtained CW data on Zelinda suggest interesting topography in the form of a
large (>15 km) at region. The 2002 apparition is one of the strongest radar opportunities for any main-belt
asteroid until after 2020, and hence nine nights of imaging should support a high-resolution 3-D shape model and
should enable us to rene the rotation period and determine the pole direction.
Name Institution E-mail Phone Student
Christopher Magri University of Maine
at Farmington
magri@maine.edu 207-778-7369 no
I do NOT want to do remote observing.
Instrument Setup
S-Band radar S-band receiver
Atmospheric Optical Instruments:
Special Equipment or setup: none
RFI Considerations
Frequency Ranges Planned
2380 (S-band radar)
1