United States Air ForceThor Delta DSpace Launch Complex 17A, Cape Canaveral SFS, FL, USA
Syncom 3
Launched
August 19, 1964
Summary
Syncom 3 launched on an United States Air Force Thor Delta D from Space Launch Complex 17A, Cape Canaveral SFS, FL, USA on August 19, 1964. It was United States Air Force's 207th launch, 32nd this year and humanity's 349th orbital launch attempt. It was the 1st Thor Delta D flight. The payload was bound for Geosynchronous Orbit (GSO). 2 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Thor Delta D · United States Air Force
- Booster
- No booster details on record.
- Mission
- Communications · Geosynchronous Orbit (GSO)
- Milestone
- 1st Thor Delta D flightUnited States Air Force's 207th launch32nd this yearhumanity's 349th orbital launch attempt56th orbital launch attempt this year
Flight preview
Catalogued objects
2 catalogued: 1 payload, 1 rocket stage; 2 still in orbit
- Syncom 3 · NORAD 858 · in orbit
Delta 25 Stage 3 · in orbit
Data from J. McDowell, planet4589.org
About this launch
Syncom 3 was the first geostationary satellite.
Pad

Space Launch Complex 17A, Cape Canaveral SFS, FL, USA
24th launch from Space Launch Complex 17A, 2nd this year · 117th from Cape Canaveral SFS, FL, USA
145 launches from this pad · 1,131 from Cape Canaveral SFS, FL, USA
153 days after the previous launch from this pad
Questions
When did Syncom 3 launch?
Syncom 3 launched on August 19, 1964. The time is known to the hour, not the minute.
Where can I watch Syncom 3?
No webcast is on record for this launch.
What rocket launched Syncom 3?
Thor Delta D, flown by United States Air Force. Thor Delta D spec sheet
Where did Syncom 3 launch from?
Space Launch Complex 17A, Cape Canaveral SFS, FL, USA.
What orbit was Syncom 3 going to?
Geosynchronous Orbit (GSO), a communications mission.
How many satellites did Syncom 3 launch?
1 payload from this launch is catalogued, still in orbit (Data from J. McDowell, planet4589.org).