Ctrl K

© Polaris Intelligence 2026

Privacy Terms Admin

OPS 4029

retired

Signals IntelligenceGEOCOSPAR 1981-107ALaunched 10/31/1981

Mission & Launch

Launch Mission: OPS 4029 Mission
Launch Vehicle: Titan IIIC
Launch Date: 10/31/1981
Last Contact: 1/1/1991

Orbit & Mass

Orbit Class: GEO
Altitude: 36,000 km
Inclination: 10 deg
Dry Mass: 900 kg
Total Mass: 1,000 kg

Payload Classification

Mission Type: Signals Intelligence
Payload Category: SIG
Payload Class: D

Organizations

Operator: U.S. National Reconnaissance Office (NRO)
Manufacturer: Northrop Grumman

Constellation

Name: VORTEX
Active Satellites: 1

Registry

COSPAR ID: 1981-107A
UN Registration: ST/SG/SER.E/059