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Proposal Identification No.:

R2737

Date Received:

2012-Mar-21 16:01:27

Technical Page
Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: Urgent Planetary Radar Solar System 3 hours Hours 1 hour

Observations of two NEAs by extending scheduled radar time on March 23 and

24.
ABSTRACT:
We propose to extend existing scheduled planetary radar time to observe two NEAs: 2010 SV3 and 2012 BT23 on March 23, 24, 2012. These ob jects will be bright enough for astrometry to improve the orbit determination, and possibly get a rough shape determination. The positions of these ob jects are known well enough that pointing will not be a problem. 2010 SV3 is expected to be 200-400m in diameter, and should be detectable at SNR 3-5 per run, assuming rapid rotation. If it rotates more slowly, the SNR will be higher. 2012 BT23, discovered in early February, is expected to be 400-1000 m in diameter, and should be detectable at SNR at least 8 per run. The availability of these ob jects in a time already scheduled for planetary radar avoids the need for (separately) warming up the transmitter, makes effiicent use of the radar transmitter with minimal impact on the existing schedule. If for some reason we do not detect 2012 BT23, the scheduled pro ject (A2645) can run as planned in the remaining time.

Name Ellen Howell

Institution Arecibo Observatory

E-mail ehowell@naic.edu

Phone

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