CHINA AEROSPACE SCIENCE AND TECHNOLOGY CORPORATION
Long March 4B | Unknown Payload
—
—
Oct 23, 2026 at 19:25 UTC
▸ Flight profile›
Initializing Launch Globe…
PADLaunch Area 94 (SLS-2 / 603)
SITEJiuquan Satellite Launch Center, People's Republic of China →ORBITUnknown
TYPEUnknown
MISSION OVERVIEW
Details TBD.
LAUNCH DETAILS
VEHICLE
Long March 4BMISSION
Unknown Payload
MISSION TYPE
Unknown
TARGET ORBIT
Unknown
LAUNCH PAD
Launch Area 94 (SLS-2 / 603)COUNTRY
CHN
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Half-year
LAUNCH LIBRARY 2 PRIMARY
API ID: 3621085f-deae-4f89-bd54-c0f96ee44421
Reported date: Oct 23, 2026 at 19:25 UTC
Last synced: 3 minutes ago
This launch date and time are confirmed by the launch provider. Countdown is active.
SCHEDULE & STATUS HISTORY
STATUS CHANGEOct 17, 2026 at 14:08 UTC
TBC → GO
Source: Launch Library 2
DELAYED(1.4 hrs)
Oct 17, 2026 at 14:08 UTCOct 23, 2026 18:00 → Oct 23, 2026 19:25 UTC
Source: Launch Library 2
LAUNCH MAP
PAD WEATHER
Loading weather…
CAN YOU SEE THIS LAUNCH?
Select a location to check if this launch is visible from where you are
VEHICLE — Long March 4B →
MANUFACTURER
China Aerospace Science and Technology Corporation
VARIANT
B
FLIGHTS
58
SUCCESSES
57
SUCCESS RATE
98.3%
The Long March 4B (Chinese: 长征四号乙火箭), also known as the Chang Zheng 4B, CZ-4B and LM-4B is a Chinese orbital carrier rocket. Launched from Launch Complex 1 at the Taiyuan Satellite Launch Center, it is a 3-stage rocket, used mostly to place satellites into low Earth and sun synchronous orbits.
FREQUENTLY ASKED QUESTIONS
When is the Long March 4B | Unknown Payload launch?
The Long March 4B | Unknown Payload is scheduled for Friday, October 23, 2026 at 7:25 PM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: GO.
What rocket is being used for Unknown Payload?
The Long March 4B | Unknown Payload mission uses the Long March 4B rocket, manufactured by China Aerospace Science and Technology Corporation. The Long March 4B has flown 58 times with a 98.3% success rate.
Where is the Long March 4B | Unknown Payload launching from?
The launch takes place from Launch Area 94 (SLS-2 / 603) at Jiuquan Satellite Launch Center, People's Republic of China.
What orbit is Unknown Payload going to?
The Unknown Payload mission is targeting Unknown.
Who is launching Unknown Payload?
The Long March 4B | Unknown Payload is operated by China Aerospace Science and Technology Corporation.
Can I watch the Long March 4B | Unknown Payload launch live?
Yes. Visit the launch detail page on Space Launch Live for embedded YouTube webcasts, replay videos, and links to live coverage from SpaceX, NASA, NASASpaceflight, and other channels.
LAUNCH TIMELINE
Oct 17, 2026 14:48 UTC
Launch status set to GO for launch
Updated via Launch Library 2
Oct 17, 2026 14:08 UTC
Launch delayed by 1.4 hours
Oct 23, 2026 18:00 UTC u2192 Oct 23, 2026 19:25 UTC (via Launch Library 2)
Oct 17, 2026 14:08 UTC
Status changed: TBC u2192 GO
Launch GO for launch (via Launch Library 2)
Oct 15, 2026 21:08 UTC
Launch added to tracker
Imported from Launch Library 2 API
Oct 15, 2026 21:08 UTC
Launch date set: Oct 23, 2026 at 19:25 UTC
NET (No Earlier Than) confirmed by China Aerospace Science and Technology Corporation
May 19, 2025 21:47 UTC
Launch Roundup: SpaceX to start new Starlink shell; China, Russia to launch unknown payloadsThis week, SpaceX will begin building a new shell for its Starlink constellation, launching fromu2026 The post Launch Roundup: SpaceX to start new Starlink shell;…
NASASpaceflight
LIVE DATA SOURCES
Last data sync: 3 minutes ago
●Launch Library 23 minutes ago
Launch ID: 3621085f-deae-4f89-bd54-c0f96ee44421
●Spaceflight News API5 minutes ago
1 article matched
●Open-Meteo Weather1 month ago
Pad weather at 40.96, 100.3
BROWSE BY
Mission Profile
Unknown Payload is a Long March 4B mission operated by China Aerospace Science and Technology Corporation set to lift off from Launch Area 94 (SLS-2 / 603), Jiuquan Satellite Launch Center, People's Republic of China on October 23, 2026. The flight is tasked with delivering its payload on a unknown mission to Unknown.