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Proposal Identification No.:

R2792 Arecibo Observatory

Date Received: 2012-Sep-04 20:14:19 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: ABSTRACT: We propose radar observations, physical characterization, and orbit refinement of near-Earth asteroid 2002 GT in June of 2013. NASA's Deep Impact spacecraft is on course to encounter 2002 GT in January of 2020, but very little is known about the asteroid, and the observations we propose will support the spacecraft by providing information otherwise unavailable from any other ground-based technique. Outreach Abstract: We propose radar observations to study the size, shape, rotation, and to improve the orbit of near-Earth asteroid 2002 GT in June of 2013. NASA's Deep Impact spacecraft is on course to encounter 2002 GT in January of 2020, but very little is known about the asteroid, and the observations we propose will support the spacecraft by providing information otherwise unavailable from any other ground-based technique. Regular Planetary Radar Solar System 16.75

less than 100 GB

Arecibo Radar Observations of Near-Earth Asteroid and Deep Impact Spacecraft Target (163249) 2002 GT in June of 2013

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 no

Additional Authors
Patrick A. Taylor Arecibo Observatory ptaylor@naic.edu Ellen S. Howell Arecibo Observatory ehowell@naic.edu Marina Brozovic Jet Propulsion Laboratory marina.brozovic@jpl.nasa.gov Jon D. Giorgini Jet Propulsion Laboratory jdg@tycho.jpl.nasa.gov Steven R. Chesley Jet Propulsion Laboratory

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steven.r.chesley@jpl.nasa.gov Jean-Luc Margot University of California, Los Angeles jeanlucmargot@gmail.com Michael W. Busch NRAO

michael.william.busch@gmail.com Christopher Magri University of Maine at Farmington magri@maine.edu Michael K. Shepard Bloomsburg University

mshepard@bloomu.edu Shantanu P. Naidu University of California, Los Angeles spn@ucla.edu (graduate student)

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 Table 1 of the proposal.

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

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Sp ecial Equipment or setup:

none

Section IV - RFI Considerations Frequency Ranges Planned

Section V - Observing List Target List
Asteroid 2002 GT Please see Table 1 of the proposal.

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