Leonid Space LLC

When will your satellite deorbit? Lifetime forecasts that stay current.

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About the firm

Leonid Space LLC delivers real-time satellite orbital monitoring and lifetime forecasting solutions to protect low Earth orbit spacecraft. Combining real-time tracking telemetry with short- and long-term space weather forecasting, its validated analysis pipeline predicts orbital decay with high accuracy, alerting operators when solar activity shifts deorbit timelines. The practice also provides mission design consulting, including propulsion sizing, guidance and control (GNC) design, and Orbital Debris Assessment Report (ODAR) compliance.

Firm type
Aerospace Engineering · Simulation Engineering

People

Scott ShambaughFounder

Capabilities

Satellite Lifetime Monitoring

Service website

Provides spacecraft operators with continuous tracking and prediction of orbital decay. By combining real-time satellite telemetry with solar and geomagnetic weather forecasts, this analysis pipeline alerts operators when fluctuating atmospheric conditions shift expected deorbit timelines, helping protect low Earth orbit assets and minimize mission risk.

  • Satellite Lifetime Forecasting

    Delivers predictive assessments of orbital longevity validated against six decades of historical deorbit data, offering high accuracy under both known and fully predictive space weather scenarios.

  • Real-Time Lifetime Alerts

    Monitors active spacecraft to automatically detect when solar storms or changing atmospheric density accelerate decay, issuing immediate notifications to operations teams.

  • Constellation-Level Analytics

    Tracks and models orbital behavior across entire multi-satellite fleets, enabling operators to analyze aggregated health trends and project long-term constellation dynamics.

  • FCC 5-Year Rule Compliance

    Verifies and documents that spacecraft meet international and domestic post-mission disposal timelines, ensuring regulatory requirements are satisfied.

  • Propellant Level and Orbit Control Modeling

    Simulates spacecraft maneuver capability and remaining onboard propellant to accurately predict control limits and final mission termination timelines.

Spacecraft and Mission Design

Service website

Helps spacecraft developers design missions and hardware capable of enduring unpredictable space weather environments. Engineering services ensure constellations are sized, controlled, and configured to meet operational goals and satisfy launch requirements.

  • Propulsion Sizing and Analysis

    Calculates the delta-v and propellant volume required to maintain orbits and execute controlled deorbits under varying solar cycle conditions.

  • GNC System Design and Controllability

    Sizes and configures guidance, navigation, and control hardware to ensure attitude and orbit control systems can manage peak atmospheric drag.

  • Orbit and Launch Date Sensitivity Analysis

    Simulates orbital decay across various launch dates and target altitudes to identify optimal mission parameters and operational margins.

  • ODAR Report Generation

    Authors Orbital Debris Assessment Reports required for regulatory clearance, verifying spacecraft compliance with space debris mitigation guidelines.

Industries

Space · Aerospace · Federal

Projects

Swift Observatory Reentry Forecasting

Denver, CO · Space · 2026 · Client: NASA

Project details

Published continuous lifetime forecasts for NASA's Neil Gehrels Swift Observatory to track its rapid orbital decay. By simulating atmospheric drag and solar storm impacts, the forecasting service provided critical tracking data during a planned orbital reboost mission, evaluating the probability of safe operation prior to rendezvous.