Asteroid occultation on Mar 16, 2013

[PTS]

Hi,
I have prepared finder charts for this event from Digital Sky Survey and The Sky 6.
Finder charts are 15 x 15 arcmin.

See also:
http://occultation.freebbs.tw/viewthrea ... a=page%3D1


PTS
===============================================IOTA/IOTA-ES occultation update for
(74) Galatea / 2UCAC 31170769 event on 2013 Mar 16, 15:35 UT
Visible from China


Summary
-------
On 2013 Mar 16 UT, the 101 km diameter asteroid (74) Galatea will occult a 12.2
mag star in the constellation Virgo for observers along a path across China.

In the case of an occultation, the combined light of the asteroid and the star
will drop by 1.5 mag to 13.4 mag (the magnitude of the asteroid) for at most 6.4
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: 86
* date and approx. time of event: 2013 Mar 16, 15:28 - 2013 Mar 16, 15:41 UT
* geocentric midpoint of event [JD]: 2456368.14952083
* magnitude of target star: 12.2
* magnitude drop [mag]: 1.5
* estimated maximum duration [s]: 6.4
* Moon: 23 % sunlit, 127° distance
* Sun: 176° distance
* rough path description: China

The occultation path
--------------------
* approximate projected width [km]: 104
* 1 sigma uncertainty interval [path widths]: +/- 0.59
* 1 sigma uncertainty interval [seconds]: +/- 3.6
* 1 sigma uncertainty interval approx RA,DE ["]: (+/- .032 +/- .034)
* 1 sigma uncertainty ellipse (major, minor, PA): ( .034", .032", 2° )
* approx speed of asteroid's shadow [km/s]: 15.8189
* website for maps:
http://www.asteroidoccultation.com