Polaris Intelligence
Polaris
Intelligence
About
Ctrl K
Sign in
© Polaris Intelligence 2026
PrivacyTermsAdmin

Discoverer 6

retired
Earth ObservationLEOCOSPAR 1959 ZETLaunched 8/19/1959
Admin Edit
Mission & Launch
Launch Mission
Discoverer 6
Launch Vehicle
Thor Agena A
Launch Date
8/19/1959
Last Contact
8/20/1959
Orbit & Mass
Orbit Class
LEO
Altitude
526.5 km
Inclination
84 deg
Dry Mass
132 kg
Total Mass
810 kg
Payload Classification
Mission Type
Earth Observation
Payload Category
IMG
Payload Class
D
Organizations
Operator
U.S. Defense Advanced Research Projects Agency (DARPA)
Manufacturer
Lockheed Martin
Registry
COSPAR ID
1959 ZET
Track