Asteroid occultation event on Mar 01, 2012

[PTS]

Hi,
I've prepared finder charts from DSS and The Sky 6 for this event.
Finder charts from DSS are 15 x 15 arcmin.

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


pts
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IOTA/IOTA-ES occultation update for
(203) Pompeja / TYC 1870-00189-1 event on 2012 Mar 01, 15:32 UT
Visible from Philippines, Hong Kong, S China


Summary
-------
On 2012 Mar 01 UT, the 108 km diameter asteroid (203) Pompeja will occult a 9.4
mag star in the constellation Taurus for observers along a path across
Philippines, Hong Kong, S China.

In the case of an occultation, the combined light of the asteroid and the star
will drop by 4.2 mag to 13.6 mag (the magnitude of the asteroid) for at most
11.4 seconds.

This update is based on UNSO/Flagstaff astrometry for the asteroid kindly
provided by Alice Monet, historical astrometry from the MPC files (via AstDys),
and the following catalogs for the star position: UCAC.

The event at a glimpse
----------------------
* Rank: 99
* date and approx. time of event: 2012 Mar 01, 15:29 - 2012 Mar 01, 15:43 UT
* geocentric midpoint of event [JD]: 2455988.14785417
* magnitude of target star: 9.4
* magnitude drop [mag]: 4.2
* estimated maximum duration : 11.4
* Moon: 56 % sunlit, 9� distance
* Sun: 105� distance
* rough path description: Philippines, Hong Kong, S China

The occultation path
--------------------
* approximate projected width [km]: 112
* 1 sigma uncertainty interval [path widths]: +/- 0.33
* 1 sigma uncertainty interval [seconds]: +/- 5.2
* 1 sigma uncertainty interval approx RA,DE ["]: (+/- .035 +/- .022)
* 1 sigma uncertainty ellipse (major, minor, PA): ( .035", .022", 90� )
* approx speed of asteroid's shadow [km/s]: 9.4853
* website for maps:
http://www.asteroidoccultation.com