Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/BennertagR2517tp.pdf Дата изменения: Mon Jul 6 19:12:49 2009 Дата индексирования: Tue Aug 18 11:12:31 2009 Кодировка: Поисковые слова: asteroid

Proposal Identification No.:

R2517

Date Received:

2009-Jul-02 20:55:18

Technical Page
Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Urgent Planetary Radar Solar System 17:00 Hours

Urgent Proposal for Arecibo Radar Imaging of Near-Earth Asteroid 2009 KC3

We propose radar observations of potentially hazardous asteroid 2009 KC3, which will be a strong imaging target during its approach within 19 lunar distances in August, 2009. This ob ject has an absolute magnitude of 17.9, suggesting a diameter within a factor of two of 800 meters. Nothing is known about its physical properties, but its orbital parameters yield a Tisserand parameter of 2.73 that is within the range for Jupiter family comets and outside the normal range for asteroids. Is 2009 KC3 an inactive comet nucleus?That is one of the questions we seek to answer. We propose five days of radar imaging to increase the probability of obtaining thorough rotation coverage, which is critical for estimation of the 3D shape of this ob ject.

Name Lance A. M. Benner

Institution Jet Propulsion Laboratory

E-mail lance.benner@jpl.nasa.gov

Phone 818-354-7412

Student no

Remote Observing Request

X

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

Instrument Setup
S-Band radar Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

RFI Considerations

1


Frequency Ranges Planned

2