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TechnicalLEOP

Launch and Early Orbit Phase

The critical initial phase after launch when spacecraft systems are activated and checked.

LEOP is the high-risk period immediately following launch.

Activities

  • Spacecraft separation confirmation
  • Initial acquisition by ground stations
  • Solar array deployment
  • Attitude stabilization
  • System checkouts

Duration Typically 3-7 days depending on spacecraft complexity.

Launch and Early Orbit Phase (LEOP) - Definition | Space Compliance Glossary | Caelex — Regulatory OS for the orbital economy