Station Map for the Occultation by (1149) Volga at Tuesday, 2009 December 08 (~ 02:12 UT)

V-Magnitude of target star TYC 1861-01414-1: 8.9  mag
Spectral type F8
Johnson B-V Colour Index: + 0.5
UCAC instrumental „pseudo-R“ fit-model magnitude: 8.7 mag (data from UCAC3)

Double star with 4 components! Component A will be occulted.

STF 755AB
Mag. 8.88 and 9.50
Year        Sep                PA
1830       6.0 arcsec      316 deg
2003       5.9 arcsec      318 deg

STF 755AC
Mag 8.88 and 7.76
Year        Sep                 PA
1879       146.0 arcsec   34 deg
2003       148.1 arcsec   32 deg

STF 755AD
Mag 8.88 and 11.08
Year        Sep                  PA
1835        98.0 arcsec     61 deg
1997        95.5 arcsec     60 deg
(Data: WDS 2006.5)

The max duration is expected to be 4.4 sec with a max drop of 5.5 mag.
The event will take place at an altitude of 52 deg and at azimuth 240 deg. The sun will be at an altitude of -46 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ± 0.75 path widths.
The probabilities to see a positive event:

Centre line: ~  50 %
Path limits: ~  41 %
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 you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_12/1208_1149_18228.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20091208_18228_Sites.txt

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

Good luck with your observation!

Oliver Klös

IOTA-ES

(1149) Volga, 2009 Dec 08, Station Map

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