United States Air ForceThor SLV-2A Agena DSpace Launch Complex 1W, Vandenberg SFB, CA, USA
KH-4A 28
Launched
December 24, 1965
Image: Unknown
Summary
KH-4A 28 launched on an United States Air Force Thor SLV-2A Agena D from Space Launch Complex 1W, Vandenberg SFB, CA, USA on December 24, 1965. It was United States Air Force's 299th launch, 68th this year and humanity's 514th orbital launch attempt. It was the 45th Thor SLV-2A Agena D flight and the 15th this year. The payload was bound for low Earth orbit (LEO). The tracked orbit of OPS 4639, one of 2 catalogued objects, from January 17, 1966, was 172 × 291 km inclined 80.0°. 2 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Vehicle
- Thor SLV-2A Agena D · United States Air Force
- Booster
- No booster details on record.
- Mission
- Government/Top Secret · Low Earth Orbit (LEO)
- Milestone
- 45th Thor SLV-2A Agena D flight · 15th this yearUnited States Air Force's 299th launch68th this yearhumanity's 514th orbital launch attempt121st orbital launch attempt this year
Flight preview
Orbit: as tracked
OPS 4639 · NORAD 1866 · 1965-110 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- OPS 4639
- Object ID
- 1965-110A
- Epoch
- 1966-01-17 08:44:46 UTC
- Mean motion
- 16.18319204 rev/day
- Eccentricity
- 0.00904
- Inclination
- 79.9854°
- Ascending node
- 82.1181°
- Arg. of perigee
- 82.92°
- Mean anomaly
- 278.1142°
- Element set
- 999
- Rev at epoch
- 375
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: LEO.
Catalogued objects
2 catalogued: 1 payload, 1 component; none still in orbit
- OPS 4639 · NORAD 1866 · re-entered January 20, 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
43rd launch from Space Launch Complex 1W, 3rd this year · 199th from Vandenberg SFB, CA, USA
56 launches from this pad · 919 from Vandenberg SFB, CA, USA
220 days after the previous launch from this pad
Questions
When did KH-4A 28 launch?
KH-4A 28 launched on December 24, 1965. The time is known to the hour, not the minute.
Where can I watch KH-4A 28?
No webcast is on record for this launch.
What rocket launched KH-4A 28?
Thor SLV-2A Agena D, flown by United States Air Force. Thor SLV-2A Agena D spec sheet
Where did KH-4A 28 launch from?
Space Launch Complex 1W, Vandenberg SFB, CA, USA.
What orbit did KH-4A 28 reach?
The tracked orbit of OPS 4639, one of 2 catalogued objects, from January 17, 1966, was 172 × 291 km inclined 80.0°.
How many satellites did KH-4A 28 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).
