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Calculation of the parallax

ESO: "Approximated method for the calculation of the parallax (with examples)", written by P. Rocher (IMCCE)

http://www.vt-2004.org/Background/Infol2/EIS-B4.html

Example:
City 1: Antananarivo: latitude 18° 52' S, longitude 47° 30' E
City 2: Helsinki: latitude60° 8' N, longitude 25° 3' E

1. Using the duration of the interior transits

2. Using the times of the interior first contacts

City 1 deg min sec Latitude: N S Longitude: W E City 2 deg min sec Latitude: N S Longitude: W E Difference between the dates of the first interior contacts (decimal minutes) Parallax (arcseconds): Sun distance (km):

JavaScript computing time difference

Updated: 2004 May 21

Juergen Giesen