Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/MargottagR1933tp.pdf Дата изменения: Thu Jun 17 21:38:11 2004 Дата индексирования: Sat Dec 22 22:32:32 2007 Кодировка: Поисковые слова: earth orbit

Proposal Identification No.:

R1933

Date Received:

2004-Feb-02 00:24:43

Technical Page
Proposal Type: General Category: Observation Category: Total Time Requested: Prop osal Title: Regular Planetary Radar Solar System 18 Hours

Dynamical and Physical Characterization of an ob ject in an Earth Horseshoe

Orbit
ABSTRACT:
This is a resubmission of R1784 which was rated A in a previous cycle. No data were obtained due to transmitter failure. We request 14 hours of Arecib o Planetary Radar time to elucidate the origin of a 120-m diameter ob ject that follows a horsesho e orbit ab out Earth. Radar astrometry will b e used to pin down the orbital history of the ob ject over several centuries. The radar-derived shap e, spin, and surface prop erties will help constrain a plausible source region, which may very well b e the Earth-Mo on system. This ob ject may b e a go o d candidate for detecting the evolution of asteroid spin states due to thermal reemission of sunlight (YORP effect).

Name Jean-Luc Margot

Institution UCLA

E-mail jlm@ess.ucla.edu

Phone 310 825 0632

Student no

Service Observing Request

Remot e Observing Request

X

None All of the observing run. Part of the observing run. Queue Observing X

No Maybe Yes

Instrument Setup
S-Band radar S-band receiver

Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

RFI Considerations Frequency Ranges Planned

1