Real-time satellite tracking is monitoring where the satellite is now and where it is going. Information you can get from real-time tracking
includes satellite location (Latitude, Longitude, Altitude or position vector), satellite velocity (speed, heading, flight path angle or velocity vector), azimuth and elevation pointing or look angles and the determination of Doppler shift on communication frequencies caused by relative motion between a satellite and an observer.
Most satellite tracking software provides real time graphic plots of satellite position, heading, and various tabular annotation data. Some of these programs can even drive antenna tracking interfaces and tune transceivers to compensate for Doppler frequency shift. Most tracking software will predict line-of-sight or visual pass opportunities between a satellite and a ground observer.