Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/BlacktagR1928tp.pdf Дата изменения: Tue May 25 21:54:23 2004 Дата индексирования: Sat Dec 22 21:34:39 2007 Кодировка:

Proposal Identification No.:

R1928

Date Received:

2004-Feb-02 12:51:24

Technical Page
Proposal Type: General Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Planetary Radar Solar System 2.5 Hours

Interferometric Radar Observations of Asteroid (25143) Itokawa

Sub-kilometer sized asteroid (25143) Itokawa will closely approach the Earth in June 2004, at which time we request a day to use the S-band radar to illuminate it while the reflected p ower is imaged by the NRAO's VLBA interferometer. Synthesis imaging of a radar illuminated target could provide plane-of-sky image and p osition information that is orders of magnitude b etter than other ground-based metho ds, and that is complementary to standard radar mapping which has high absolute precision along the line of sight. The Japanese Hayabusa mission will encounter this asteroid mid-2005. With b oth a spacecraft flyby and extensive ground-based observations during its Earth passage, this is an excellent opp ortunity to provide 'ground truth' for this imaging metho d and as well as remote sensing studies of asteroids in general. Precision astrometry obtained from this may also b e useful in efforts to measure non-gravitational forces acting on this ob ject.

Name Greg Black

Institution University of ginia

Vir-

E-mail gblack@virginia.edu

Phone 434-243-8941

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
1


Frequency Ranges Planned
2380

2