Manifest / 01Go
Starlink Group 10-39
Falcon 9 Block 5
ProviderSpaceX
PadSpace Launch Complex 40
DateAug 20, 2026
Time (UTC)03:38 PM UTC
Launch clockT– to liftoff
T-:::
Confirmed to the minute00
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Success
US-AO 4
Tsiklon-2ASoviet Space Program90/19
Friday, March 22, 1968 · 09:30 AM UTC
This mission is complete.
Mission Brief
US-A (Upravlenniye Sputnik Aktivny) were active radar satellites for ocean surveillance. The high power consumtion of the active radar required a nuclear reactor as power source. The satellites were known as RORSAT in the west. The US-AO series consisted of satellites, which tested all the system components but the nuclear reactor. They were battery powered.
PayloadUS-AO 4
OrbitLow Earth Orbit
CustomerSoviet Space Program
StagesUnknown
Pad90/19, Baikonur Cosmodrome, Republic of Kazakhstan
Mission Timeline
14 / 14100%Ground vector
Launch site
Site locked
90/19
Baikonur Cosmodrome, Republic of Kazakhstan
Global range
- Latitude
- 46.081°N
- Longitude
- 62.930°E
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
09:30 AM UTC - 09:30 AM UTC
Schedule History
No meaningful launch-time or status changes recorded.
