United States Air ForceThor SLV-2A Agena DSpace Launch Complex 1W, Vandenberg SFB, CA, USA
KH-4A 18
Launched
March 25, 1965
Image: Unknown
Summary
KH-4A 18 launched on an United States Air Force Thor SLV-2A Agena D from Space Launch Complex 1W, Vandenberg SFB, CA, USA on March 25, 1965. It was United States Air Force's 248th launch, 17th this year and humanity's 423rd orbital launch attempt. It was the 33rd Thor SLV-2A Agena D flight and the 3rd this year. The payload was bound for low Earth orbit (LEO). OPS 4803, one of 2 catalogued objects, reached a 193 × 271 km orbit inclined 96.1°. 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
- 33rd Thor SLV-2A Agena D flight · 3rd this yearUnited States Air Force's 248th launch17th this yearhumanity's 423rd orbital launch attempt30th orbital launch attempt this year
Flight preview
Orbit: as tracked
OPS 4803 · NORAD 1307 · 1965-026 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 1965-026A
- Epoch
- 1965-03-25 23:37:18 UTC
- Mean motion
- 16.18174845 rev/day
- Eccentricity
- 0.0058853
- Inclination
- 96.0889°
- Ascending node
- 197.2444°
- Arg. of perigee
- 152.9082°
- Mean anomaly
- 207.4002°
- 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: 1 payload, 1 component; none still in orbit
- OPS 4803 · NORAD 1307 · re-entered April 5, 1965
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
41st launch from Space Launch Complex 1W, 1st this year · 169th from Vandenberg SFB, CA, USA
56 launches from this pad · 919 from Vandenberg SFB, CA, USA
96 days after the previous launch from this pad
Questions
When did KH-4A 18 launch?
KH-4A 18 launched on March 25, 1965. The time is known to the hour, not the minute.
Where can I watch KH-4A 18?
No webcast is on record for this launch.
What rocket launched KH-4A 18?
Thor SLV-2A Agena D, flown by United States Air Force. Thor SLV-2A Agena D spec sheet
Where did KH-4A 18 launch from?
Space Launch Complex 1W, Vandenberg SFB, CA, USA.
What orbit did KH-4A 18 reach?
OPS 4803, one of 2 catalogued objects, reached a 193 × 271 km orbit inclined 96.1°.
How many satellites did KH-4A 18 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).
