United States Air ForceTitan 24BSpace Launch Complex 4W, Vandenberg SFB, CA, USA
KH-8 51
Launched
February 28, 1981
Summary
KH-8 51 launched on an United States Air Force Titan 24B from Space Launch Complex 4W, Vandenberg SFB, CA, USA on February 28, 1981. It was United States Air Force's 765th launch, 1st this year and humanity's 2,411th orbital launch attempt. It was the 20th Titan 24B flight and the 1st this year. The payload was bound for low Earth orbit (LEO). It reached a 179 × 344 km orbit inclined 96.4°. One object from this launch is catalogued.
- Watch
- No webcast on record.
- Vehicle
- Titan 24B · United States Air Force
- Booster
- No booster details on record.
- Mission
- Government/Top Secret · Low Earth Orbit (LEO)
- Milestone
- 20th Titan 24B flight · 1st this yearUnited States Air Force's 765th launch1st this yearhumanity's 2,411th orbital launch attempt20th orbital launch attempt this year
Flight preview
Orbit: as tracked
OPS 1166 · NORAD 12315 · 1981-019 · Space-Track
Show the numbers for orbit elements
- Object
- OPS 1166
- Object ID
- 1981-019A
- Epoch
- 1981-03-01 03:36:56 UTC
- Mean motion
- 16.07261395 rev/day
- Eccentricity
- 0.0124058
- Inclination
- 96.3787°
- Ascending node
- 142.8301°
- Arg. of perigee
- 158.8591°
- Mean anomaly
- 201.7969°
- Element set
- 999
- Rev at epoch
- 5
- B*
- 0.000033999
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 1166 · NORAD 12315 · re-entered June 20, 1981
Data from J. McDowell, planet4589.org
About this launch
KH-8 Block 4 high resolution reconnaissance satellite.
Pad

Space Launch Complex 4W, Vandenberg SFB, CA, USA
72nd launch from Space Launch Complex 4W, 1st this year · 485th from Vandenberg SFB, CA, USA
93 launches from this pad · 919 from Vandenberg SFB, CA, USA
77 days after the previous launch from this pad
Questions
When did KH-8 51 launch?
KH-8 51 launched on February 28, 1981. The time is known to the hour, not the minute.
Where can I watch KH-8 51?
No webcast is on record for this launch.
What rocket launched KH-8 51?
Titan 24B, flown by United States Air Force. Titan 24B spec sheet
Where did KH-8 51 launch from?
Space Launch Complex 4W, Vandenberg SFB, CA, USA.
What orbit did KH-8 51 reach?
It reached a 179 × 344 km orbit inclined 96.4°.
How many satellites did KH-8 51 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).