PreviSat 3.0

PreviSat is a simple, fast and easy application that displays the position of artificial satellites. Its intuitive graphical interface is designed to meet the needs of the neophyte or experienced observer. Developed in C /Qt, it can work on all platforms (Windows, Linux, MacOS) and makes fast and precise calculations.

PreviSat can calculate all passes of artificial satellites for any location in the world. So you can observe passes of the ISS (International Space Station) or Iridium flares, even if you live in a city.

Main Features:

- PreviSat has a real-time, a manual and a simulation mode. So you can observe the displacements of the satellites in real time, or you can display positions for any times. In the "Main" tab, the numerical position is displayed in different frames (terrestrial, horizontal, equatorial) and some characteristics are given depending on the satellite position (velocity, magnitude). We also give positions of the Sun and of the Moon.

The second tab gives the cartesian position of satellite and osculating elements (or keplerian elements). It also calculates some parameters deriving from osculating elements, for example apogee and perigee, orbital period.

Iridium flares can be determinated very quickly for the given location, and we also give terrestrial coordinates of the location next to your place of observation where the flare is maximum. An Iridium flare can reach a magnitude of -8, which is 30 to 40 times brighter than Venus. more