Leonid is solving orbital drag. We forecast the space weather that drives atmospheric density, correct that with real-time data from thousands of satellites, and turn it into the orbit predictions that operators need for collision avoidance, target tracking, and mission lifetime assurance. Our mission is to make Low Earth Orbit a safe, predictable place to fly.

Each of these data products is individually state-of-the-art. Together they form an unprecedented forecast of LEO and VLEO.

• Space Weather Indices

  Space Weather IndicesAPI available

  Forecasts of solar and geomagnetic activity

  Space weather is the single biggest unknown in predicting satellite orbits. Solar activity causes the upper atmosphere to swell, and the increased drag causes satellites and orbital debris to veer from their expected paths.

  We predict the two indices that feed every major atmosphere density models, solar flux (F10.7) and geomagnetic activity (Ap), using a unified internal forecast model that looks out from days to decades. In retroforecast validation against all other available forecast models, Leonid’s model shows the lowest error over all time horizons.

  • 40% lower error in next-day F10.7 & Ap forecasts than NOAA’s Space Weather Prediction Center
  • 3-hour updates that react to real-time conditions
  • Decadal solar cycle realism in chained timing, shape, and strength

  Request API accessRead the validation
• Atmospheric Density

  Atmospheric DensityAPI available

  Density grids corrected against real drag: historical, nowcast, and forecast

  Standard atmosphere models fail to capture much of how the upper atmosphere actually reacts to space weather, with routine 10% day-to-day jumps in unmodeled density. We correct them with real-time on-orbit data.

  Every few hours we measure drag on about 2,000 pieces of space debris, including hundreds of objects flying in VLEO. This global network of drag sensors gives us a high-fidelity, real-time correction to global atmospheric density, which we then feed into a predictive model. The result is a decades-long historical record, a live nowcast, and a forecast. We show accuracy equal to or better than the US Space Force’s HASDM, with much higher spatial resolution.

  • 80% reduction in drag uncertainty over the past decade
  • 6x more accurate next-day density forecasts than the uncorrected model
  • Commerically available unlike HASDM, which is US government only

  Request API access
• Orbit Predictions

  Orbit PredictionsIn customer beta

  Drag-aware orbit propagation, on demand

  Send us a satellite’s state and get back a forecast trajectory with quantified uncertainty, propagated through our space weather and density forecasts. Built for automation and rapid decision-making in collision avoidance, target tracking, and maneuver planning.

  • 100-1000x faster than industry-standard propagators
  • Calibrated uncertainty from end to end

  Request early access
• Lifetime Monitoring

  Lifetime MonitoringAPI available

  Know when your satellites will deorbit

  Lifetime Monitoring tells you when your satellites will deorbit, and alerts you if space weather cuts their lifetime. Know while you can still act.

  Anchored in on-orbit telemetry and using our latest space weather forecasts, monitoring can be performed from public TLEs to minimize required data sharing. Or you can provide ephemeris data and orbit control plans for the most accurate predictions.

  Predict revenue, forecast long-lead production needs, ensure mission coverage for national security and customer demand, and verify compliance with deorbit regulations.

  • Within 9.7% accuracy for one-year predictions of reentry date
  • Most comprehensive validation of deorbit predictions ever performed

  Request API accessRead the validation
• Consulting & Mission Design

  Expert help for everything else

  Need something else? We can help with mission planning, spacecraft design, regulatory compliance, and more. Get in touch, or book a meeting with us directly.