PreviSat  
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PreviSat : Satellite Tracking For Everyone

PreviSat is a satellite tracking software for observing purposes. Very easy to use, it shows positions of artificial satellites in real-time or manual mode. PreviSat is able to make predictions of their passes and also predictions of Iridium flares.

PreviSat implements the SGP4 model (revised in 2006) which uses the TLE orbital elements in order to calculate the geocentric position of artificial satellites. PreviSat shows satellites in a world map view or in a sky map view and is able to calculate all passes of satellites for any location in the world. It also calculates flares produced by satellites of the Iridium constellation.

PreviSat is free software licensed under the GNU General Public License. This gives you the freedom to use and modify PreviSat to suit your needs.

PreviSat main window
PreviSat main window. See screenshots.