Gpredict is a real-time satellite tracking and orbit prediction application. It can track an unlimited number of satellites and display their position and other data in lists, tables, maps, and polar plots (radar view). Gpredict can also predict the time of future passes for a satellite, and provide you with detailed information about each pass.
This is the application main screen where you can spot the orbiting satellites or other objects like the ISS shown on the lower right, see if there is anything passing above your position (you can set multiple positions and easily change from one to the other), and get more information about the orbit info and the transponders of any satellite just by clicking it on the map.
One of the greatest things about gpredict is its almost limitless configurability in the user interface section. You can choose among many different layouts, placement behavior, different window mixes and sizes, and even set your own custom view. I can think of many applications that could make the life of their users much easier by doing something similar…
So, what can we use gpredict for? There can be three main things that gpredict can help you with and those are the radio control, antenna rotator control, and the visual observing of the passing satellites for those of you who live in low light pollution areas.
The radio device can be easily set up by tracking the satellite you are using and setting the same frequency with the one that your satellite is emits what you want to receive. All this is done by adding a radio device in the preferences.
The antenna rotators are also set up through the preferences, but in this case you should make sure that your device is properly supported by hamlib.
The ability of Gpredict to precisely predict the future passes of selected objects allows you to expect certain orbiting objects of interest in a very specific time. This allows you to track passing satellites with a telescope, a pair of binoculars, or even your eyes if the skies are dark enough.
There are over 35000 satellites in orbit around the Earth, and you can see many of them depending on their size and distance from the surface. A good bet would be the biggest object that is the International Space Station (ISS), or the Hubble telescope that is also visible to the naked eye. Note that gpredict won’t provide any visibility information like the heavens above does, but will provide information and prediction about every pass, so the filtering of the visibility factor is your responsibility.