United States Air ForceThorad SLV-2H Agena DSpace Launch Complex 3W, Vandenberg SFB, CA, USA
KH-4B 15
Launched
September 10, 1971
Image: NASA
Summary
KH-4B 15 launched on an United States Air Force Thorad SLV-2H Agena D from Space Launch Complex 3W, Vandenberg SFB, CA, USA on September 10, 1971. It was United States Air Force's 555th launch, 19th this year and humanity's 1,258th orbital launch attempt. It was the 11th Thorad SLV-2H Agena D flight and the 4th this year. The payload was bound for low Earth orbit (LEO). OPS 5454, one of 3 catalogued objects, reached a 162 × 253 km orbit inclined 75.0°. 3 objects from this launch are catalogued, 2 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
- 11th Thorad SLV-2H Agena D flight · 4th this yearUnited States Air Force's 555th launch19th this yearhumanity's 1,258th orbital launch attempt87th orbital launch attempt this year
Flight preview
Orbit: as tracked
OPS 5454 · NORAD 5468 · 1971-076 · Space-Track · tracking 1 of 3 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1971-076A
- Epoch
- 1971-09-10 23:59:09 UTC
- Mean motion
- 16.27132797 rev/day
- Eccentricity
- 0.0069609
- Inclination
- 74.97°
- Ascending node
- 23.2295°
- Arg. of perigee
- 156.2044°
- Mean anomaly
- 204.2406°
- 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
3 catalogued: 2 payloads, 1 debris; none still in orbit
- OPS 5454 · NORAD 5468 · re-entered October 5, 1971
- ARROYO · NORAD 5469 · re-entered February 3, 1976
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
45th launch from Space Launch Complex 3W, 3rd this year · 369th from Vandenberg SFB, CA, USA
81 launches from this pad · 919 from Vandenberg SFB, CA, USA
170 days after the previous launch from this pad
Questions
When did KH-4B 15 launch?
KH-4B 15 launched on September 10, 1971. The time is known to the hour, not the minute.
Where can I watch KH-4B 15?
No webcast is on record for this launch.
What rocket launched KH-4B 15?
Thorad SLV-2H Agena D, flown by United States Air Force. Thorad SLV-2H Agena D spec sheet
Where did KH-4B 15 launch from?
Space Launch Complex 3W, Vandenberg SFB, CA, USA.
What orbit did KH-4B 15 reach?
OPS 5454, one of 3 catalogued objects, reached a 162 × 253 km orbit inclined 75.0°.
How many satellites did KH-4B 15 launch?
2 payloads from this launch are catalogued, none of them still in orbit (Data from J. McDowell, planet4589.org).