United States Air ForceThorad SLV-2H Agena DSpace Launch Complex 3W, Vandenberg SFB, CA, USA
KH-4B 12
Launched
November 18, 1970
Image: NASA
Summary
KH-4B 12 launched on an United States Air Force Thorad SLV-2H Agena D from Space Launch Complex 3W, Vandenberg SFB, CA, USA on November 18, 1970. It was United States Air Force's 534th launch, 25th this year and humanity's 1,153rd orbital launch attempt. It was the 7th Thorad SLV-2H Agena D flight and the 4th this year. The payload was bound for low Earth orbit (LEO). OPS 4992, one of 2 catalogued objects, reached a 182 × 233 km orbit inclined 83.0°. 2 objects from this launch are catalogued, all of them payloads.
- 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
- 7th Thorad SLV-2H Agena D flight · 4th this yearUnited States Air Force's 534th launch25th this yearhumanity's 1,153rd orbital launch attempt107th orbital launch attempt this year
Flight preview
Orbit: as tracked
OPS 4992 · NORAD 4721 · 1970-098 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1970-098A
- Epoch
- 1970-11-18 23:54:44 UTC
- Mean motion
- 16.27060318 rev/day
- Eccentricity
- 0.0038259
- Inclination
- 82.9887°
- Ascending node
- 85.0113°
- Arg. of perigee
- 203.3694°
- Mean anomaly
- 156.5807°
- Element set
- 999
- Rev at epoch
- 2
- 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
2 catalogued: 2 payloads; none still in orbit
- OPS 4992 · NORAD 4721 · re-entered December 11, 1970
- TOPHAT I · NORAD 4722 · re-entered September 14, 1977
Data from J. McDowell, planet4589.org
About this launch
The KH-4B (Keyhole-4B) was sixth optical reconnaissance satellite version in the Corona-program.
Pad

Space Launch Complex 3W, Vandenberg SFB, CA, USA
42nd launch from Space Launch Complex 3W, 4th this year · 355th from Vandenberg SFB, CA, USA
81 launches from this pad · 919 from Vandenberg SFB, CA, USA
118 days after the previous launch from this pad
Questions
When did KH-4B 12 launch?
KH-4B 12 launched on November 18, 1970. The time is known to the hour, not the minute.
Where can I watch KH-4B 12?
No webcast is on record for this launch.
What rocket launched KH-4B 12?
Thorad SLV-2H Agena D, flown by United States Air Force. Thorad SLV-2H Agena D spec sheet
Where did KH-4B 12 launch from?
Space Launch Complex 3W, Vandenberg SFB, CA, USA.
What orbit did KH-4B 12 reach?
OPS 4992, one of 2 catalogued objects, reached a 182 × 233 km orbit inclined 83.0°.
How many satellites did KH-4B 12 launch?
2 payloads from this launch are catalogued, none of them still in orbit (Data from J. McDowell, planet4589.org).
