Hi,
Here is another astroid occultation event on June 17, as given by WC Yue:
http://forum.hkas.org.hk/redirec ... o=lastpost#lastpost
I've prepared finder charts from the Palomar Digitial Sky Survey and TheSKy 6.
PTS
Details:
-----------------------------------------------------
IOTA/IOTA-ES occultation update for
(146) Lucina / TYC 0305-00664-1 event on 2009 Jun 17, 12:27 UT
Visible from New Zealand, Australia, Indonesia, Philippines, Hong Kong, China
Summary
-------
On 2009 Jun 17 UT, the 132 km diameter asteroid (146) Lucina will occult a 11.0
mag star in the constellation Virgo for observers along a path across New
Zealand, Australia, Indonesia, Philippines, Hong Kong, China.
In the case of an occultation, the combined light of the asteroid and the star
will drop by 2.1 mag to 12.9 mag (the magnitude of the asteroid) for at most
11.8 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: 2009 Jun 17, 12:22 - 2009 Jun 17, 12:36 UT
* midpoint of event [JD]: 2455000.01902917
* magnitude of target star: 11.0
* magnitude drop [mag]: 2.1
* estimated maximum duration : 11.8
* Moon: 33 % sunlit, 162° distance
* Sun: 107° distance
* rough path description: New Zealand, Australia, Indonesia, Philippines, Hong Kong, China
The occultation path
--------------------
* approximate projected width [km]: 136
* 1 sigma uncertainty interval [path widths]: +/- 0.32
* 1 sigma uncertainty interval [seconds]: +/- 4.2
* 1 sigma uncertainty interval approx RA,DE ["]: (+/- .026 +/- .033)
* 1 sigma uncertainty ellipse (major, minor, PA): ( .033", .026", 2° )
* approx speed of asteroid's shadow [km/s]: 11.1747
* website for maps:
http://www.asteroidoccultation.com |
發表於 2009-6-8 10:33:43