End-of-Life Disposal
The planned procedures and maneuvers performed at the end of a satellite's operational life to reduce its impact on the space environment.
Explanation
End-of-life (EOL) disposal is a critical part of responsible space operations. Common disposal methods include controlled reentry (for LEO satellites) where the spacecraft performs a deorbit burn to ensure it burns up over an uninhabited ocean area, or graveyard orbit (for GEO satellites) where the spacecraft is boosted several hundred kilometers above the GEO belt into a disposal orbit where it will not interfere with active satellites. Post-mission disposal (PMD) requirements are increasingly mandated by regulators. The FCC now requires disposal plans for all U.S.-licensed satellites. Typical PMD for LEO must achieve reentry within 25 years, though operators like SpaceX target much shorter timelines. Passivation — venting residual propellant and discharging batteries — is performed to prevent explosions that create debris. Compliance with disposal timelines is a key indicator of responsible space stewardship.
Why It Matters
EOL disposal is the most important operational decision an operator makes for space sustainability. A satellite that is simply abandoned contributes to the debris problem and increases collision risk for every other operator.
Concept Map
How End-of-Life Disposal connects to other glossary terms:
Frequently Asked Questions
What happens if a satellite is not disposed of?
It becomes debris, increasing collision risk. Some abandoned satellites have later fragmented, creating hundreds of new debris pieces.
Is EOL disposal mandatory?
Increasingly yes. The FCC and other regulators now require disposal plans for licensing. International guidelines recommend disposal within 25 years.
Sources
Last updated: July 1, 2026