China Aerospace Science and Technology CorporationLong March 4BLaunch Area 94 (SLS-2 / 603), Jiuquan Satellite Launch Center, People's Republic of China
Unknown Payload
Launch window
No countdown — this launch time is not yet known to the minute.~October 23, 2026 · 18:00 UTCAdd to calendar
Image: CASC
Summary
China Aerospace Science and Technology Corporation's Long March 4B launches from Jiuquan on a mission with undisclosed payload. Official confirmation of the exact date and details is still awaited.
- Watch
- No webcast announced yet.
- Window
- Oct 23, 18:00 to 21:00 UTCaround 2 am at the pad
- Booster
- No booster details available.
- Mission
- Unknown · Unknown (N/A)
- Milestone
- Planned as the 59th Long March 4B flight · 3rd this yearChina Aerospace Science and Technology Corporation's 620th launch50th this yearhumanity's 7,423rd orbital launch attempt250th orbital launch attempt this year
Flight preview
Orbit: representative
Target from padside's flight model. Not a catalogued object; this panel switches to the tracked orbit once the object is catalogued. Ascent drawn from padside's representative profile.
About this launch
Unknown Payload is expected to launch on a China Aerospace Science and Technology Corporation Long March 4B from Launch Area 94 (SLS-2 / 603), Jiuquan Satellite Launch Center, People's Republic of China on October 23, 2026 at around 18:00 UTC. The launch window runs from 18:00 to 21:00 UTC. It is China Aerospace Science and Technology Corporation's 620th launch, 50th this year and humanity's 7,423rd orbital launch attempt. It is planned as the 59th Long March 4B flight and the 3rd this year. The payload is bound for Unknown (N/A).
Details TBD.
Pad
Launch Area 94 (SLS-2 / 603), Jiuquan Satellite Launch Center, People's Republic of China
Planned as the 139th launch from Launch Area 94 (SLS-2 / 603), 7th this year · 300th from Jiuquan Satellite Launch Center, People's Republic of China
Local pad time at liftoff: around 2 am
138 launches from this pad · 299 from Jiuquan Satellite Launch Center, People's Republic of China
43 days after the previous launch from this pad
All launches from Jiuquan Satellite Launch Center, People's Republic of ChinaOpen in maps
Updates
Added launch per NOTAMs; Launch vehicle and payload identities extremely uncertain.
Questions
When does Unknown Payload launch?
Unknown Payload is scheduled on October 23, 2026 at around 18:00 UTC. The launch window runs from 18:00 to 21:00 UTC. The time is known to the hour, not the minute.
Where can I watch Unknown Payload live?
No webcast has been announced yet.
What rocket is launching Unknown Payload?
Long March 4B, flown by China Aerospace Science and Technology Corporation. Long March 4B spec sheet
Where is Unknown Payload launching from?
Launch Area 94 (SLS-2 / 603), Jiuquan Satellite Launch Center, People's Republic of China. Liftoff is around 2 am local time at the pad.
What orbit is Unknown Payload going to?
Unknown (N/A), a unknown mission.