Long March 5B — mission imagery
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Xuntian Telescope

Long March 5BChina Aerospace Science and Technology Corporation101
Friday, December 31, 2027 · 12:00 AM UTCAdd to Calendar

NextMission AnnouncedT-720:00:00

Time to launch

00
DAYS
00
HRS
00
MIN
00
SEC
Launch Window Confidence
46% — Uncertain

Vehicle

Long March 5B

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The Long March 10A is a human-rated launch vehicle designed to replace the current Long March 2F, along with the Low Earth Orbit version of China's Mengzhou crewed spacecraft, as their...

Height67.4 m
LEO Payload18,000 kg
Launches600
Successes575

Provider

China Aerospace Science and Technology Corporation

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CHN • Founded 1999

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 manufactu...

Mission Brief

Xuntian, formerly known as the Chinese Space Station Telescope (CSST), is a Chinese space telescope designed to perform high-resolution, large-area, multi-band imaging and slit-less spectroscopy surveys of the sky at ultraviolet to infrared wavelengths of 255 – 1000 nm. The survey camera is slated to cover approximately 17500 square degrees of the sky in various bands, reaching maximum magnitudes of about 26. Xuntian will carry a survey camera, a tera-hertz receiver, a multi-channel imager, an integral field spectrograph, and a cool planet imaging coronagraph. Xuntian will be launched to a Low Earth Orbit that will be co-orbiting with the Tiangong space station/Chinese Space Station, which will allow for periodic docking with the station for regular maintenance by astronauts.

PayloadXuntian Telescope
OrbitLow Earth Orbit
CustomerChina Aerospace Science and Technology Corporation
Stages2
Pad101, Wenchang Space Launch Site, People's Republic of China

Mission Timeline

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Mission Announced

Official mission announcement and payload assignment

T-720:00:00
12:00 AM UTC
  • Mission AnnouncedT-720:00:00
  • Vehicle RolloutT-48:00:00
  • Wet Dress RehearsalT-24:00:00
  • Launch Day PrepT-06:00:00
Site lock

Launch Site

101, Wenchang Space Launch Site, People's Republic of China

LAUNCH SITE
19.614°N, 110.951°E

Schedule History

No delays or schedule changes recorded.