Asteroid occultation event on July 14, 2011

Exoplanet occultation, asteroid occultation,
solar research, comet observation, astrometry, etc.
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PTS
夸克星
文章: 17247
註冊時間: 週日 28 10月, 2007 08:50
來自: HK

Asteroid occultation event on July 14, 2011

文章 PTS » 週二 14 6月, 2011 21:29

Hi,
I've prepared finder charts for this event.
Please also see:

http://forum.hkas.org.hk/viewthread.php ... a=page%3D1


PTS
***************************************
IOTA/IOTA-ES occultation update for
(0) 2005 GE187 / UCAC2 28386992 event on 2011 Jul 14, 12:46 UT
Visible from Taiwan, S China


Summary
-------
On 2011 Jul 14 UT, the 115 km diameter asteroid (0) 2005 GE187 will occult a
13.2 mag star in the constellation Libra for observers along a path across
Taiwan, S China.

In the case of an occultation, the combined light of the asteroid and the star
will drop by 9.0 mag to 22.2 mag (the magnitude of the asteroid) for at most
12.6 seconds.

This update is based on historical astrometry from the MPC files (via AstDys),
and the following catalogs for the star position: UCAC.

The event at a glimpse
----------------------
* Rank: 0
* date and approx. time of event: 2011 Jul 14, 12:35 - 2011 Jul 14, 12:49 UT
* geocentric midpoint of event [JD]: 2455757.03177917
* magnitude of target star: 13.2
* magnitude drop [mag]: 9.0
* estimated maximum duration [s]: 12.6
* Moon: 99 % sunlit, 51� distance
* Sun: 119� distance
* rough path description: Taiwan, S China

The occultation path
--------------------
* approximate projected width [km]: 134
* 1 sigma uncertainty interval [path widths]: +/- 189.03
* 1 sigma uncertainty interval [seconds]: +/- 5932.7
* 1 sigma uncertainty interval approx RA,DE ["]: (+/- 2.571 +/- .942)
* 1 sigma uncertainty ellipse (major, minor, PA): ( 2.578", .927", 86� )
* approx speed of asteroid's shadow [km/s]: 9.0956
* website for maps:
http://www.asteroidoccultation.com
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PTS
夸克星
文章: 17247
註冊時間: 週日 28 10月, 2007 08:50
來自: HK

reminder

文章 PTS » 週三 13 7月, 2011 09:17

reminder

PTS

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