PhosphorOrbit transforms your iPhone into a Cold War-era space surveillance terminal. Track every catalogued object in Earth orbit — from the International Space Station to dead Soviet satellites and the growing cloud of debris threatening our future in space — all rendered on a retro CRT phosphor radar scope.
FEATURES
- Real-time azimuth/elevation polar radar scope showing all satellites overhead
- SGP4/SDP4 orbital propagation using official NORAD/CelesTrak data
- Object classification: space stations, payloads, Starlink, rocket bodies, debris
- Pass predictions with sky track diagrams — know exactly where to look
- Live satellite tracking during active passes
- Mercator ground track with day/night terminator
- Orbital shell density histogram by altitude band
- Kessler Syndrome dashboard: debris ratios, critical bands, avoidance manoeuvre rates
- Offline resilience — cached TLE data keeps the scope running without connectivity
- User watchlist for tracking specific objects
- Green, amber, and white phosphor CRT colour themes
- No accounts, no tracking, no clutter
DATA SOURCE
All orbital data is provided by CelesTrak, sourced from the US Space Force 18th Space Defense Squadron. No account or subscription required.
SUPPORT
Need help with PhosphorOrbit? Whether you have a question about how the app works, want to request a feature, or need to report a problem, you can reach us through the following channels:
- Ask a question — get help with using PhosphorOrbit
- Report a bug — let us know if something isn't working
- Request a feature — suggest improvements or new functionality
We aim to respond to all support requests promptly. You can also browse existing issues to see if your question has already been answered.