Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/NolantagR2002tp.pdf Дата изменения: Thu Sep 30 18:16:56 2004 Дата индексирования: Sat Dec 22 21:38:11 2007 Кодировка: Поисковые слова: релятивистское движение

Proposal Identification No.:

R2002

Date Received:

2004-Sep-28 18:09:48

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Urgent Planetary Radar Radar Solar System 6 Hours

Radar Observations of Comet C/2004 S1 (VAN NESS)

A recently discovered (2004 Septemb er 26) comet C/2004 S1 (VAN NESS) will b e observable at Arecib o 2004 Octob er 10-20. While the ephemeris is still uncertain, we exp ect it to b e visible during the b eginning of, and somewhat b efore, the R1982, R1980, and R1885 observations in that window. We request time in the currently empty slots b efore those observations. Opp ortunities for radar observation of comets are quite rare, of order once a year. Radar provides measures of the nucleus and the size distribution of the grain coma that are very difficult to obtain any other way.

Name Michael C Nolan

Institution Arecibo Observatory

E-mail nolan@naic.edu

Phone

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