TJSW-27A & B

Overview

Destination: Unknown
Mission: Government/Top Secret

Unknown Launch Complex 9A Taiyuan Satellite Launch Center, People's Republic of China

2 Chinese classified satellites claimed to be for communication technology test purposes. Actual mission not known.

Updates

Cosmic_Penguin • July 30, 2026, 1:50 a.m.

Launch success.


Cosmic_Penguin • July 23, 2026, 12:15 p.m.

Added launch per NOTAMs; Launch vehicle and payload identities extremely uncertain.


Long March 6A

Family:
Configuration: A

The Long March 6A is a Chinese launch vehicle of the Long March family, which was developed by the China Aerospace Science and Technology Corporation (CASC) and the Shanghai Academy of Spaceflight Technology (SAST). The vehicle is a further development of the Long March 6, with 2 YF-100 engines on the first stage as opposed to 1 on the Long March 6, augmented by 4 solid rocket boosters. The Long March 6A is China's first rocket with solid rocket boosters. The maiden launch of the Long March 6A took place 29 March 2022, successfully reaching orbit. It was also the first launch from the newly built launch complex 9A in Taiyuan.

Specifications
  • Minimum Stage
    1
  • Max Stage
    2
  • Length
    50.0 m
  • Diameter
    3.35 m
  • Fairing Diameter
    5.2 m
  • Launch Mass
    530.0 T
  • Thrust
    7230.0 kN
Family
  • Name
    Long March 6A
  • Family
  • Variant
    A
  • Alias
  • Full Name
    Long March 6A
Payload Capacity
  • Launch Cost
  • Low Earth Orbit
  • Geostationary Transfer Orbit
  • Direct Geostationary
  • Sun-Synchronous Capacity
    6400.0 kg

China Aerospace Science and Technology Corporation

China Aerospace Science and Technology Corporation

(CASC)

Chairman & President: Lei Fanpei Founded: 1999 Successes: 595 Failures: 16 Pending: 6

Agency Type:

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.

INFO WIKI
SpaceNews

China launches secretive TJS-27 pair, orbits next-gen Tianlian relay sat

HELSINKI — China sent a new pair of secretive satellites into a programmatically new orbit Wednesday, while also upgrading its on-orbit communications relay capabilities. A Long March 6A rocket lifted […] The post China launches secretive…

NASASpaceflight

Launch Preview: Falcon 9 and Chang Zheng rockets set to launch this week

Five orbital launches are scheduled worldwide for this week. In China, a Chang Zheng 6A… The post Launch Preview: Falcon 9 and Chang Zheng rockets set to launch this week appeared first on NASASpaceFlight.com.

Taiyuan Satellite Launch Center, People's Republic of China

Launch Complex 9A


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2 days, 5 hours ago
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Long March 12
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3 days, 4 hours ago
SatNet LEO Group 24
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Falcon 9
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3 days, 6 hours ago
USSF-366
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Falcon 9
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3 days, 7 hours ago
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The Globalstar global mobile communications network offers global, digital real time voice, data and fax services via its Low Earth Orbit satellite c…


Falcon 9
Success
1 week ago
Starlink Group 17-49
Space Launch Complex 4E - Vandenberg SFB, CA, USA

A batch of 24 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.


Falcon 9
Success
1 week ago
Starlink Group 10-19
Space Launch Complex 40 - Cape Canaveral SFS, FL, USA

A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.


H3-22
Success
1 week, 1 day ago
Michibiki 7 (QZS-7)
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Long March 7A
Failure
1 week, 1 day ago
ChinaSat 4B
201 - Wenchang Space Launch Site, People's Republic of China

Chinese communication geostationary satellite for unknown purposes.