About National Intelligence Organizations Products Missions Vehicles Spacecraft Constellations Forecasts Latest Information

Ctrl K

© Polaris Intelligence 2026Admin

OPS 4258

retired

Orbit: GEOLaunched 12/11/1977

Technical Specifications

Verified technical details

Dry Mass: 300 kg
Total Mass: 700 kg
Power: Unknown
Design Life: Unknown

Stakeholders

Operator

U.S. National Reconnaissance Office (NRO)

Manufacturer

Northrop Grumman

Launch Mission

OPS 4258 Mission

12/11/1977