Also called:
Orbital Test Satellite; Operations
Technology Satellite
Date of launch (location):
May 11, 1978 (ETR)
Launch vehicle:
Delta 3914
Weight (kg):
865
Shape:
Six-sided with solar panels
Dimensions (m):
2.39 height
2.13 length (9.26 with solar panels
deployed)
Power source:
Solar panels plus NiCd battery
NASA's role:
Launch vehicle (reimbursable)
Cooperating organizations:
NASA and European Space Agency
Prime contractor:
Hawker Siddeley Dynamics
Objectives:
Three-year commercial communications
system for Europe; capable of 6000 telephone
circuits.
Results:
Successful.
Reference: ESA, "OTS -One Year in Orbit," ESA News Release, May 16, 1979.