Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/NolantagR1897tp.pdf Дата изменения: Mon Jul 19 23:12:48 2004 Дата индексирования: Sat Dec 22 21:38:02 2007 Кодировка: Поисковые слова: asteroid

Proposal Identification No.:

R1897

Date Received:

2004-Oct-14 17:03:32

Technical Page
Proposal Type: General Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Urgent Planetary Radar Solar System 9 Hours

Radar Observations of Near-Earth Asteroid 2003 TL4

We prop ose to obtain high-resolution (15m) imaging of near-Earth asteroid 2003 TL4 in late Octob er of 2003. Recent exp erience (Nolan et al., 2002, Margot et al., 2002, Giorgini et al., 2002) has shown that there is an enormous variety in the shap es, radar reflectivities, and rotation states of near-Earth asteroids. Go o d imaging opp ortunities for mo derate-sized ob jects such as 2003 TL4 (400m diameter) o ccur only a few times p er year. Radar imaging can help determine the internal structure by giving us information ab out the size, spin rate and even density in the case of binary systems. Most currently known binary systems have primary ob jects near this size. We have the opp ortunity to also obtain sp ectroscopy of this asteroid which will enhance the science return from the radar images by linking the comp osition to the shap e and spin.

Name Michael Nolan

Institution Arecibo Observatory

E-mail nolan@naic.edu

Phone 878-2612 x334

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


2380

2