The Venus Transit 2004

The Venus Transit 2004

European Science & Technology Week 2004 European Southern Observatory European Association for Astronomy Education Astronomical Institute of the Academy of Sciences of the Czech Republic
Observatoire de Paris Institut de Mécanique Céleste et de Calcul des Éphémérides (IMCCE)
Last update: 2004 Jun 08 11:37 CEST
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VT-2004 No. of registered participants : 2066
No. of observers with timings : 83
No. of timings sent : 135
Official value of 1 AU : 149597870 km
Calculated AU : 152883233 km
Dispersion : ± 2533857 km
Absolute Difference : 3285363 km
Difference as percentage: 2.196 %

.... more (with graphics).

Join the Observing        Campaign!

Map of Observers'        Locations

Ralph Vandebergh
June 8, 2004, 07:50 UT
The Netherlands
Display Window 2 Kislovodsk Solar Station
(Pulkovo Observatory)
H-alpha full field image
June 8, 2004, 05:26 UT
Russian Federation
ESO HQ Meudon Eichens Refractor
Paris Meudon Observatory
June 8, 2004, 09:34 UT
Latest Comment (June 8, 09:39 UT) : Two videos from the AGAPE group at ESO are now available - the entry of Venus onto the solar disc and the first half of the passage across the disc. If you missed the beginning of the Venus transit, you may access all previous versions of this Central Display page in the Archive.
From the display above (which is updated all the time), the VT-2004 obsevers are clearly doing very well - we are only about 2% off, although there is a clear systematic effect (the computed AU is about 2 million km too large)! This means that we are nearly as good as the professional observers in the 19th century. Moreover, now we get this result in real time - thanks to modern communication technology - whereas they had to wait several months in those days....
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Go to VT-2004 National        Nodes


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