United States Air ForceThorad SLV-2G Agena DSpace Launch Complex 1W, Vandenberg SFB, CA, USA
KH-4A 35
Launched
August 9, 1966
Image: NASA
Summary
KH-4A 35 launched on an United States Air Force Thorad SLV-2G Agena D from Space Launch Complex 1W, Vandenberg SFB, CA, USA on August 9, 1966. It was United States Air Force's 341st launch, 42nd this year and humanity's 596th orbital launch attempt. It was the 1st Thorad SLV-2G Agena D flight. The payload was bound for low Earth orbit (LEO). It reached a 199 × 303 km orbit inclined 100.1°. One object from this launch is catalogued.
- Watch
- No webcast on record.
- Vehicle
- Thorad SLV-2G Agena D · United States Air Force
- Booster
- No booster details on record.
- Mission
- Government/Top Secret · Low Earth Orbit (LEO)
- Milestone
- 1st Thorad SLV-2G Agena D flightUnited States Air Force's 341st launch42nd this yearhumanity's 596th orbital launch attempt79th orbital launch attempt this year
Flight preview
Orbit: as tracked
OPS 1545 · NORAD 2393 · 1966-072 · Space-Track
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1966-072A
- Epoch
- 1966-08-10 02:12:27 UTC
- Mean motion
- 16.11143535 rev/day
- Eccentricity
- 0.0078986
- Inclination
- 100.1175°
- Ascending node
- 323.2227°
- Arg. of perigee
- 172.9335°
- Mean anomaly
- 187.29°
- Element set
- 999
- Rev at epoch
- 4
- 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 1545 · NORAD 2393 · re-entered September 11, 1966
Data from J. McDowell, planet4589.org
About this launch
The KH-4A (Keyhole-4A) was the fifth optical reconnaissance satellite version in the Corona-program.
Pad

Space Launch Complex 1W, Vandenberg SFB, CA, USA
45th launch from Space Launch Complex 1W, 2nd this year · 227th from Vandenberg SFB, CA, USA
56 launches from this pad · 919 from Vandenberg SFB, CA, USA
152 days after the previous launch from this pad
Questions
When did KH-4A 35 launch?
KH-4A 35 launched on August 9, 1966. The time is known to the hour, not the minute.
Where can I watch KH-4A 35?
No webcast is on record for this launch.
What rocket launched KH-4A 35?
Thorad SLV-2G Agena D, flown by United States Air Force. Thorad SLV-2G Agena D spec sheet
Where did KH-4A 35 launch from?
Space Launch Complex 1W, Vandenberg SFB, CA, USA.
What orbit did KH-4A 35 reach?
It reached a 199 × 303 km orbit inclined 100.1°.
How many satellites did KH-4A 35 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).
![Thorad-SLV2G Agena-D (Nimbus 3) [NASA]](/media?u=https%3A%2F%2Fthespacedevs-prod.nyc3.digitaloceanspaces.com%2Fmedia%2Fimages%2Fthorad-slv2g_ag_image_20251102061406.jpg&w=1600)