PhosphorBeam now runs on a new astronomy engine shared across the range, and every pass, pointing angle and Doppler figure in the app comes from it. Satellite positions are worked out with the reference SGP4 and SDP4 orbit models, checked against the published verification set and against NASA JPL's own track of the ISS. Geostationary and high orbits such as QO-100 and the GOES weather satellites get the full deep-space treatment. AOS and LOS are solved to the second, a pass already under way shows its true start time, and Doppler correction uses the exact range rate at every moment of the pass. Orbital elements are read at full precision straight from CelesTrak. Everything is still worked out on your phone, and the layout is unchanged.

PhosphorBeam is a real-time amateur radio satellite tracker built for operators who work the birds. Track passes, compute Doppler corrections, and plan contacts — all through a retro phosphor terminal interface. REAL-TIME 3D GLOBE A rotating 3D globe displays your favourited satellites with radio footprint coverage circles. Drag to rotate, pinch to zoom, double-tap to snap back to your ground station. Fly to any tracked satellite with the GOTO control. Geostationary birds like QO-100 are shown