Station Map for the Occultation by (86) Semele at Thursday, 2008 December 18  (~ 04:01 UT)

V-Magnitude of target star TYC 1848-02237-1: 11.3 mag
Johnson B-V Colour Index: + 1.2
The UCAC2 gives a „pseudo-R magnitude“ of  11.0 mag

The max duration is expected to be 11.2 sec with a max drop of 1.1 mag.
The event will take place at an altitude of 34 deg and at azimuth 271 deg. The sun will be at an altitude of -37 deg. (At predicted centre line for longitude W 01 deg)

There is a 1 sigma uncertainty interval of  ±  0.28 path widths.
The probabilities to see a positive event:

Centre line: ~ 93 %
Path limits: ~  50 %
1 sigma lines:  ~16 %
2 sigma lines: ~ 2 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2008_12/1218_86_13390.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20081218_13390_Sites.txt

Map and Coordinates at the web page of  E.A.O.N. (not updated with Steve Preston’s latest data):
http://astrosurf.com/eaon/Occultations%20December.htm

Good luck with your observation,

Oliver Klös

IOTA-ES