Success
TJSW-23
Government/Top Secret
China Aerospace Science and Technology Corporation(CASC)GovernmentLong March 5
GTOorbit
Chinese classified satellite claimed to be for communication technology test purposes. Actual mission not known.
Saturday, December 20, 2025 at 12:30 PM
Replay
Mission details
Orbital Attempt
#7,162
CASC Mission
#565
Pad Launch
#17
Location Launch
#53
Designator
2025-306
Launch Window
NET
Dec 20, 2025, 12:30 PM
Precision
Minute
Schedule Changes
1 update
Long March 5 Specs
Long March 5 is a Chinese heavy lift launch system developed by China Academy of Launch Vehicle Technology (CALT). CZ-5 is the first Chinese vehicle designed from the ground up to focus on non-hypergolic liquid rocket propellants. Currently, two CZ-5 vehicle configurations are planned, with maximum payload capacities of ~25,000 kilograms (55,000 lb) to LEO and ~14,000 kilograms (31,000 lb) to GTO. The Long March 5 roughly matches the capabilities of American EELV heavy-class vehicles such as the Delta IV Heavy.
Length
57 m
Diameter
5 m
Launch Mass
867 t
Thrust
10,600 kN
LEO Capacity
25,000 kg
GTO Capacity
14,000 kg
Reusable
No
Maiden Flight
2016
Fastest Turnaround
1mo 27d
Total Launches
8
Successful
8
Failed
0
Consecutive Success
8
Maiden flight: Nov 3, 2016
China Aerospace Science and Technology Corporation
The China Aerospace Science and Technology Corporation (CASC) is the main contractor for the Chinese space program. It is state-owned and has a number of subordinate entities which design, develop and manufacture a range of spacecraft, launch vehicles, strategic and tactical missile systems, and ground equipment. It was officially established in July 1999 as part of a Chinese government reform drive, having previously been one part of the former China Aerospace Corporation. Various incarnations of the program date back to 1956.
Founded
1999
Administrator
Chairman & President: Lei Fanpei
Total Launches
592
Successful
577
Failed
15
Pending
9
Consecutive Success
18
Wenchang Space Launch Site, People's Republic of China
The Wenchang Space Launch Site is a rocket launch site located in Wenchang on the island of Hainan, in China. Formally a suborbital test center, it currently serves as China's southernmost spaceport. The site was selected for its low latitude, 19° north of the equator, allowing for larger payloads to be launched. It is capable of launching the Long March 5, the heaviest Chinese rocket. Unlike launch facilities on the mainland, Wenchang uses its seaport for deliveries.
Timezone
Asia/Shanghai
Local Launch Time
Dec 20, 2025, 8:30 PM
Total Launches
62
Total Landings
0
Coordinates
19.6145, 110.9511