Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/2016Spring/RichardsontagR3035.pdf Дата изменения: Tue Sep 15 04:38:22 2015 Дата индексирования: Mon Apr 11 17:54:35 2016 Кодировка:

Proposal Identification No.:

R3035 Arecibo Observatory

Date Received: 2015-Sep-01 16:08:26 William E. Gordon Telescope Observing Time Request COVER SHEET

Section I - General Information
Submitted for Sep 1 2015. This proposal has not been submitted before. Proposal Type: General Category: Observation Category: Time Requested this semester: Hours Next 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: The purpose of this work is conduct the characterization of near-Earth asteroids (NEAs) accessible to the Arecibo Observatory planetary radar during the 2016 calendar year, focusing on those ob jects expected to be of moderate- to low-resolution (the higher-resolution ob jects are covered in a separate proposal). This effort will consist of three approaches: (1) the performance of moderate-resolution imaging of 19 ob jects to improve their orbital solutions, determine their radar reflectance properties, characterize their basic shape and morphologies, and look for indications of a multiple component systems; (2) the performance of astrometric measurements (target range and Doppler shift) on 2/3 of a collection of 39 ob jects, in order to improve their orbital solutions; and (3) the conduct of monthly 8-hour (overnight) systematic observations, primarily for the purpose of performing either (1) or (2) above on newly discovered ob jects that could not be included in this proposal. Outreach Abstract: The purpose of this work is conduct the characterization of near-Earth asteroids (NEAs) accessible to the Arecibo Observatory planetary radar during the 2016 calendar year, focusing on those ob jects expected to be of moderate- to low-resolution (the higher-resolution ob jects are covered in a separate proposal). This effort will consist of three approaches: (1) the performance of moderate-resolution imaging of 19 ob jects to improve their orbital solutions, determine their radar reflectance properties, characterize their basic shape and morphologies, and look for indications of a multiple component systems; (2) the performance of astrometric measurements (target range and Doppler shift) on 2/3 of a collection of 39 ob jects, in order to improve their orbital solutions; and (3) the conduct of monthly 8-hour (overnight) systematic observations, primarily for the purpose of performing either (1) or (2) above on newly discovered ob jects that could not be included in this proposal. Large Planetary Radar Solar System 155 155 0

less than 100 GB

Radar Characterization of NEAs: Using Moderate Resolution Imaging, Astrometry, and a Systematic Survey

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Name James E Richardson Patrick A. Taylor

Institution Arecibo Observatory Arecibo Observatory

E-mail richardson@naic.edu ptaylor@naic.edu

Phone 787-878-2612 x315 787-878-2612 x358

Student no no

Additional Authors
Edgard G. Rivera-Valentin, eriverav@naic.edu Linda A. Rodriguez-Ford, lford@naic.edu Luisa F. Zambrano-Marin, luisafzambrano@gmail.com Ellen S. Howell, ellen.s.howell@gmail.com Michael C. Nolan, michaelcnolan.1@gmail.com Jon D. Giorgini, jdg@tycho.jpl.nasa.gov Lance A.M. Benner, lbenner@charter.net Marina Brozovic, Marina.Brozovic@jpl.nasa.gov Shantanu P. Naidu, Shantanu.P.Naidu@jpl.nasa.gov Jean-Luc Margot, jeanlucmargot@gmail.com Michael W. Busch, michael.william.busch@gmail.com Michael K. Shepard, mshepard@bloomu.edu Christopher Magri, magri@maine.edu Sean E. Marshall (grad student), seanm@astro.cornell.edu Adam H. Greenberg (grad student), adam@greenhodge.net Jenna L. Crowell (grad student), jenlyjones@knights.ucf.edu

This work is part of a PhD 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 UT. For these observations night-time is not needed.

Begin ­ End Interval­Interval ­ ­ ­ ­

Days Needed at This Interval

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Time Constraints (Must Be Justified in the Prop osal Text) For (1) (2) (3) the first 112 total about 80 117 total semester, about half of the following: hours spread over 19 asteroid ob jects and 38 tracks, at various times during the year. total hours (2/3 of 122 hrs), spread over 39 potential asteroids targets, single tracks for each. hours, split into 13 8-hour asteroid survey observing sessions, at or near new moon.

Next Semester Time Request

Begin ­ End Interval­Interval ­ ­ ­ ­

Days Needed at This Interval

Time Constraints (Must Be Justified in the Prop osal Text) For (1) (2) (3) the second semester, about half of the following: 112 total hours spread over 19 asteroid ob jects and 38 tracks, at various times during the year. about 80 total hours (2/3 of 122 hrs), spread over 39 potential asteroids targets, single tracks for each. 117 total hours, split into 13 8-hour asteroid survey observing sessions, at or near new moon.

Section I I I - Instruments Needed
S-Band radar S-band receiver

Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

Section IV - RFI Considerations Frequency Ranges Planned
2.33-2.43 GHz

Section V - Observing List Target List
Please see proposal.

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