Launch Success
Liftoff Time (GMT)
14:03:00
Thursday June 13, 1968
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The IDCSP (Initial Defense Communications satellite Program) provided the Pentagon with its first near-geosynchronous communications system and replaced the cancelled ADVENT project.
Geosynchronous Orbit
8 Payloads
360 kilograms
Manufacturer
US Air ForceRocket
Height: 42m
Payload to Orbit
LEO: 13,100 kg
GTO: 3,000 kg
Liftoff Thrust
13,642 Kilonewtons
Fairing
Diameter: 3m
Stages
3
Strap-ons
2
28th
Mission
5th
Mission of 1968
55th
Orbital launch attempt