Station Map for the Occultation by (1036) Ganymed at Saturday, 2011 August 06 (~ 22:50 UT)

V-Magnitude of target star TYC 4264-01166-1: 12.2 mag
Johnson B-V Colour Index: + 0.4
UCAC instrumental „pseudo-R“ fit-model magnitude: 11.6 mag (data from UCAC3)

Please notice:
In the case of an occultation, the combined light of the asteroid and the star will drop by 0.2 mag to 10.5 mag (the magnitude of the asteroid).

OCCULTATION BY A NEA (Near Earth Asteroid)!
There are more occultations to come in the next months crossing Europe!
Have a look for future events at the special webpage:

The max duration is expected to be 3.6 sec with a max drop of 0.21 mag.
The event will take place at an altitude of 71 deg and at azimuth 36 deg. The sun will be at an altitude of -26 deg. (At predicted centre line for longitude E 17 deg)

There is a 1 sigma uncertainty interval of  ± 0.65 path widths.
The probabilities to see a positive event:

Centre line: ~ 54 %
Path limits: ~  44 %
1 sigma lines:  ~ 15 %
2 sigma lines: ~ 1 %

(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 your station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):

Good luck with your observation!

Oliver Klös


(1036) Ganymed, 2011 August 06, Station Map

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