Manifest / 01Go
Starlink Group 15-20
Falcon 9 Block 5
ProviderSpaceX
PadSpace Launch Complex 4E
DateAug 22, 2026
Time (UTC)07:25 AM UTC
Launch clockT– to liftoff
T-:::
Confirmed to the minute00
10
44
02
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Success
PRIME 1
Atlas SLV-3United States Air ForceSpace Launch Complex 3E
Wednesday, December 21, 1966 · 10:15 PM UTC
This mission is complete.
Mission Brief
The Martin X-23 PRIME (Precision Recovery Including Maneuvering Entry) was a small uncrewed lifting body re-entry vehicle tested by the United States Air Force in the late 1960s. PRIME 1 was launched on 21 December 1966 on a mission to simulate a low-earth orbit reentry with a zero cross-range. The ballute deployed at 30.43 km, though the recovery parachute failed to completely deploy. The vehicle crashed into the Pacific Ocean and was not recovered.
PayloadPRIME 1
OrbitSuborbital
CustomerUnited States Air Force
Stages2
PadSpace Launch Complex 3E, Vandenberg SFB, CA, USA
Mission Timeline
14 / 14100%Ground vector
Launch site
Site locked
Space Launch Complex 3E
Vandenberg SFB, CA, USA
Global range
- Latitude
- 34.640°N
- Longitude
- 120.590°W
Range Weather
Launch commit criteria
Clear
Watch
TrackingNo active constraints
Weather Rules
Tracking no weather issues at this time.
- Primary concern
- No weather issues
- Rule count
- 0
- Temperature
- Not reported
- Surface wind
- Not reported
Window
10:15 PM UTC - 10:15 PM UTC
Schedule History
No meaningful launch-time or status changes recorded.
