Northrop Grumman’s Mission Extension Vehicle-1 (MEV-1) has successfully concluded its first mission by undocking from Intelsat’s IS-901 satellite. This event marks the first-ever undocking between two commercial spacecraft in the geosynchronous Earth orbit (GEO) graveyard, setting a new precedent in orbital servicing operations.

A video provided by Intelsat explains:

Launched in 2001, IS-901 was nearing the end of its operational life when MEV-1 docked with it in February 2020 in the satellite “graveyard.” This graveyard orbit is typically about 300 kilometers above the geostationary orbit and exists to minimize interference with active satellites.

The MEV-1 provided propulsion and attitude control, effectively extending the satellite’s service life by five years. After completing its mission, MEV-1 maneuvered IS-901 back to the GEO graveyard orbit and undocked on April 9, 2025, with the MEV-1 mission continuing.

Rob Hauge, president of Space Logistics LLC, a Northrop Grumman subsidiary, highlighted the significance of this mission: “The first-of-its-kind technology that extended a satellite’s life is paving the way for an entire infrastructure of future on-orbit satellite servicing missions for a variety of customers.”

Following this success, MEV-1 is set to embark on its next mission, and to continue demonstrating the viability of in-orbit servicing. Meanwhile, MEV-2 remains docked with Intelsat 10-02, providing life-extension services that have been extended by an additional four years beyond the original contract.

These advancements in satellite servicing technologies are poised to revolutionize the management of space assets, offering solutions for repairs, upgrades, refueling, debris removal, and more. These developments are crucial for enhancing the longevity and sustainability of satellites in orbit and reducing costs by providing longer lifespans for orbital assets.