Station Map for the Occultation by (409) Aspasia at Friday, 2009 June 12 (~ 20:32 UT)

Magnitude of target star 2UCAC 25773379: 12.4 mag

Asteroid is brighter than target star!
In the case of an occultation, the combined light of the asteroid and the star will drop by 0.3 mag to 11.2 mag (the magnitude of the asteroid).

The max duration is expected to be 31.3 sec with a max drop of 0.31 mag.
The event will take place at an altitude of 29 deg and at azimuth 183 deg. The sun will be at an altitude of -12 deg. (At predicted centre line for latitude N 45 deg)

There is a 1 sigma uncertainty interval of  ± 0.20 path widths.
The probabilities to see a positive event:

Centre line: ~  99 %
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/2009_06/0612_409_20381.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090612_20381_Sites.txt

Map and Coordinates at the web page of  E.A.O.N.:
http://astrosurf.com/eaon/Occultations%20June.htm

Good luck with your observation!

Oliver Klös

IOTA-ES

(409) Aspasia, 2009 June 12, Station Map

Schreibe einen Kommentar