Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/OstrotagR2380tp.pdf Дата изменения: Thu Dec 27 22:26:32 2007 Дата индексирования: Sun Apr 13 02:55:48 2008 Кодировка: Поисковые слова: с р р с с п п р п п с с с р р р р р п п р р р п п п

Proposal Identification No.:

R2380

Date Received:

2007-Dec-27 13:48:17

Technical Page
Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Urgent Planetary Radar Solar System 24 Hours Transmit window plus one hour.

Radar Imaging of the Very Closely Approaching Asteroid 2007 TU24

We propose radar imaging of the newly discovered asteroid 2007 TU24 on Jan 27 and 28 and Feb. 1-4, 2008. This ob ject's 1.4-lunar-distance approach on Jan. 29 is the closest for any known Potentially Hazardous Asteroid until 2027. Apart from its absolute visual magnitude (H = 20.1, implying a diameter 0.3 km if it has a typical S-class albedo), nothing is known about TU24's physical properties, but the expected echo signal-to-noise ratios (SNRs) almost certainly will suffice for 7.5-m-resolution imaging on our requested dates. Our ob jective is to obtain images with as much orientational coverage as possible and then to use them to construct a detailed physical model. On Jan 29, this ob ject will be closer than any ob ject observed at Arecibo to date. We will propose for bistatic observations receiving either at GBT or Goldstone on Jan 27 and 28, but they are not required for a successful experiment.

Name Steven J Ostro

Institution Jet Propulsion Laboratory

E-mail ostro@reason.jpl.nasa.gov

Phone 818-354-3173

Student no

Remote Observing Request

X

Observer will travel to AO Remote Observing In Absentia (instructions to operator)

Instrument Setup
S-Band radar S-band receiver

Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

RFI Considerations
1


Frequency Ranges Planned
2380 MHz

2