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Proposal Identification No.:

R2791 Arecibo Observatory

Date Received: 2012-Sep-04 19:49:55 William E. Gordon Telescope Observing Time Request COVER SHEET

Section I - General Information
Submitted for Sep 1 2012. This proposal has not been submitted before. Proposal Type: General Category: Observation Category: Time Requested this semester: Hours already used for this pro ject: Additional Hours required to complete pro ject: Minimum Useful Time: Expected Data Storage: Prop osal Title: Regular Planetary Radar Solar System 191.5 0

less than 100 GB

Arecibo Radar Observations of 19 Near-Earth Asteroids during January-June,

2013
ABSTRACT: We propose to observe 19 near-Earth asteroids with the planetary radar to obtain detailed images with resolutions up to 7.5 m/pixel; estimate 3D shapes, rotation periods, and pole directions; discern surface features; search for satellites; and improve asteroid orbits. Our targets include ob jects between 20 meters to several kilometers in diameter, with a wide range of rotation periods and compositions, and features several ob jects that should provide images comparable in their detail to those obtained by spacecraft flyby missions. Outreach Abstract: We propose to observe 19 near-Earth asteroids with the planetary radar to obtain detailed images with resolutions up to 7.5 m/pixel; estimate 3D shapes, rotation periods, and pole directions; discern surface features; search for satellites; and improve asteroid orbits. Our targets include ob jects between 20 meters to several kilometers in diameter, with a wide range of rotation periods and compositions, and features several ob jects that should provide images comparable in their detail to those obtained by spacecraft flyby missions.

Name Lance A. M. Benner Michael C. Nolan

Institution Jet Propulsion Laboratory Arecibo Observatory

E-mail lance.benner@jpl.nasa.gov nolan@naic.edu

Phone 818-354-7412 x334

Student no

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Additional Authors
Patrick A. Taylor Arecibo Observatory ptaylor@naic.edu x358 Ellen S. Howell Arecibo Observatory ehowell@naic.edu x282 Jon D. Giorgini Jet Propulsion Laboratory jdg@tycho.jpl.nasa.gov 818-393-3107 Marina Brozovic Jet Propulsion Laboratory marina.brozovic@jpl.nasa.gov Jean-Luc Margot University of California, Los Angeles jeanlucmargot@gmail.com Michael W. Busch NRAO michael.william.busch@gmail.com Shantanu P. Naidu University of California, Los Angeles spn@ucla.edu Christopher Magri University of Maine at Farmington magri@maine.edu Michael K. Shepard Bloosmburg University mshepard@bloomu.edu

This work is not part of a thesis.

Remote Observing Request

X

Observer will travel to AO Remote Observing In Absentia (instructions to operator)

Section I I - Time Request
The following times are in AST. For these observations night-time is required.

Begin ­ End Interval­Interval ­ ­ ­ ­

Days Needed at This Interval

Time Constraints (Must Be Justified in the Prop osal Text) Please see Tables 1 and 2 in the proposal for a list of targets, dates, and rise-set times.

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Section I I I - Instruments Needed
S-Band radar Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

Section IV - RFI Considerations Frequency Ranges Planned

Section V - Observing List Target List
Please see Tables 1 and 2 in the proposal.

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