You will find below the results of the calculation of the AU with the database of observations of contacts on June 18, just after the event
and on July 10 at the closure of the experiment. The data were slightly more numerous and improvedIn this table you get the values for each contact: - The value of the average distance of the Earth from the Sun (astronomical unit, AU).
- The value of the dispersion.
- The shift from the exact value of the AU.
The last line of the table, show the average value of the whole set of measurements.
 Values using the database as it was on June 18
| |
| T1 |
722 |
149908018 |
2062405 |
310148 |
| T2 |
1139 |
149076728 |
4878994 |
521142 |
| T3 |
1336 |
149438938 |
1409362 |
158932 |
| T4 |
1170 |
149840793 |
4620163 |
242923 |
| |
|
Values on July 10 at the closure of the database
| |
| T1 |
732 |
149706234 |
5897344 |
108364 |
| T2 |
1182 |
148969317 |
6471011 |
-628553 |
| T3 |
1382 |
149333921 |
4257810 |
-263949 |
| T4 |
1217 |
149715198 |
6240004 |
117328 |
| |
|
Observers´ location maps
Graphics
The plots below show the evolution of the online calculation of the AU, when observations arrived. Some stepsin these plots seem amazing but are easily explained.
At the begining, the AU changes quickly because of the small number of observations. Then, it converges towards the true value : the number of the "good" observations "well situated" on Earth increases. The steps are the signature of new observations either "good and well situated on Earth" (it makes the plots converging towards the true value) or "bad and badly situated on Earth" (it makes the plots escaping from the true value). This last occurence arrived when values are entered in the database in order to see their influence in the calculation of the AU (observers are making tests).
Remarks on the online calculation of the Astronomical Unit
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