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Definition

Launch and Early Orbit Phase

LEOP

The intense operational phase immediately after launch where the spacecraft is checked out, deployed, and brought to its operational orbit. Typically lasts days to weeks.

Related terms

Link Budget

A detailed accounting of all gains and losses in a communications link from transmitter to receiver. Includes transmit p...

Low Earth OrbitLEO

An orbit with an altitude between roughly 200 km and 2,000 km. LEO offers lower latency, higher resolution imaging, and ...

Lambert's Problem

The orbital mechanics problem of finding the trajectory between two specified position vectors in a specified time of fl...

Lagrange PointL-point

One of five positions in a two-body system where a small object can maintain its position relative to the two larger bod...

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