Credits

Station Pass and this website are built on public scientific data and open-source software. Thank you to everyone who makes them available.

Orbit and sky data

• CelesTrak, Dr. T.S. Kelso: orbital elements for the ISS, Tiangong, Hubble and Starlink. celestrak.org
• ARISS (Amateur Radio on the ISS): backup ISS orbital elements for the live tracker. ariss.org
• NASA: ISS trajectory data, and NASA Black Marble night-lights imagery (NASA Earth Observatory, Suomi NPP VIIRS) behind the light-pollution map.
• NASA JPL Solar System Dynamics: Horizons ephemerides (asteroid Apophis), the Small-Body Database (comet brightness) and approximate planetary positions (E.M. Standish). ssd.jpl.nasa.gov
• IAU Minor Planet Center: comet orbital elements. minorplanetcenter.net
• International Meteor Organization: meteor shower calendar. imo.net
• The Space Devs: Launch Library 2 launch schedules. thespacedevs.com
• Yale Bright Star Catalogue (Hoffleit & Warren, 5th revised ed.), via the VizieR catalogue access tool, CDS, Strasbourg, France.
• GHSL population grid (GHS-POP 2020), European Commission Joint Research Centre, licensed CC BY 4.0.
• Apple Weather: cloud-cover forecasts in the app.

Maps

• Natural Earth: coastlines and borders on the live tracker globe (public domain), packaged as world-atlas (ISC licence). naturalearthdata.com

Open-source software

• SatelliteKit by Gavin Eadie, MIT licence: orbit propagation in the app. GitHub
• satellite.js, MIT licence: orbit propagation on the live tracker. GitHub
• d3-geo and d3-array by Mike Bostock, ISC licence: globe projection. GitHub
• TopoJSON client by Mike Bostock, ISC licence: map data decoding. GitHub

Each licence's full text is in its project's repository; the app also shows SatelliteKit's MIT licence under Settings → About → Acknowledgements & licences.

Trademarks

Satellite, mission and agency names are used only to identify what Station Pass tracks. Station Pass isn't affiliated with or endorsed by NASA, ESA, CMSA, SpaceX or any space agency. Apple, iPhone, iPad and App Store are trademarks of Apple Inc.