United States Air ForceThorad SLV-2H Agena DSpace Launch Complex 1W, Vandenberg SFB, CA, USA
Strawman 4
Launched
July 16, 1971
Image: NASA
Summary
Strawman 4 launched on an United States Air Force Thorad SLV-2H Agena D from Space Launch Complex 1W, Vandenberg SFB, CA, USA on July 16, 1971. It was United States Air Force's 552nd launch, 16th this year and humanity's 1,238th orbital launch attempt. It was the 10th Thorad SLV-2H Agena D flight and the 3rd this year. The payload was bound for low Earth orbit (LEO). It reached a 495 × 511 km orbit inclined 75.0°. One object from this launch is catalogued.
- Watch
- No webcast on record.
- Vehicle
- Thorad SLV-2H Agena D · United States Air Force
- Booster
- No booster details on record.
- Mission
- Government/Top Secret · Low Earth Orbit (LEO)
- Milestone
- 10th Thorad SLV-2H Agena D flight · 3rd this yearUnited States Air Force's 552nd launch16th this yearhumanity's 1,238th orbital launch attempt67th orbital launch attempt this year
Flight preview
Orbit: as tracked
OPS 8373 · NORAD 5329 · 1971-060 · Space-Track
Show the numbers for orbit elements
- Object
- OPS 8373
- Object ID
- 1971-060A
- Epoch
- 1971-07-16 14:58:43 UTC
- Mean motion
- 15.23210049 rev/day
- Eccentricity
- 0.001153
- Inclination
- 74.9838°
- Ascending node
- 166.7877°
- Arg. of perigee
- 257.6297°
- Mean anomaly
- 102.3564°
- Element set
- 999
- Rev at epoch
- 3
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: LEO. Ascent drawn from padside's representative profile.
Catalogued objects
1 catalogued: 1 payload; none still in orbit
- OPS 8373 · NORAD 5329 · re-entered August 31, 1978
Data from J. McDowell, planet4589.org
About this launch
The Strawman series of ELINT/SIGINT satellites, known for decades only as "Heavy Ferrets", are the fourth variation of Agena-based ELINT satellites. These satellites were designed to detect, map and investigate SAM and ABM radars.
Pad

Space Launch Complex 1W, Vandenberg SFB, CA, USA
54th launch from Space Launch Complex 1W, 1st this year · 366th from Vandenberg SFB, CA, USA
56 launches from this pad · 919 from Vandenberg SFB, CA, USA
324 days after the previous launch from this pad
Questions
When did Strawman 4 launch?
Strawman 4 launched on July 16, 1971. The time is known to the hour, not the minute.
Where can I watch Strawman 4?
No webcast is on record for this launch.
What rocket launched Strawman 4?
Thorad SLV-2H Agena D, flown by United States Air Force. Thorad SLV-2H Agena D spec sheet
Where did Strawman 4 launch from?
Space Launch Complex 1W, Vandenberg SFB, CA, USA.
What orbit did Strawman 4 reach?
It reached a 495 × 511 km orbit inclined 75.0°.
How many satellites did Strawman 4 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).
