June 8 2004

Calculations

To calculate the Astronomical Unit (average distance to Sun) , combine 'your data' (observer 1) with those of 'someone else' (observer 2). The fold-out menu shows a list of other registered observers world wide. The map below shows both observer locations. For observer 1 one can also pick someone from the list of observers. Also, some examples of historical observers are shown, with their virtual data for this Venus transit.

The data from DOT is very accurate. It is advisable to compare your data with DOT's data