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
