The UT 508 includes a tracking system 582. The tracking system 582 uses almanac data 584 to determine tracking data 586. The almanac data 584 provides information indicative of orbital elements of the orbit 504 of one or more satellites 502. For example, the almanac data 584 may comprise orbital elements such as “two-line element” data for the satellites 502 in the constellation that are broadcast or otherwise sent to the UTs 508 using the communication system 580.

The tracking system 582 may use the current location of the UT 508 and the almanac data 584 to determine the tracking data 586 for satellite 502. For example, based on the current location of the UT 508 and the predicted position and movement of the satellites 502, the tracking system 582 is able to calculate the tracking data 586. The tracking data 586 may include information indicative of azimuth, elevation, distance to the second satellite, time of flight correction, or other information at a specified time. The determination of the tracking data 586 may be ongoing. For example, the first UT 508 may determine tracking data 586 every 500 ms, every second, every five seconds, or at other intervals.