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CASC Huiyan (HXMT (Hard X-ray Modulation Telescope)) Long March 4B

Launch Status
Success

Rocket Launch Video Streams

About the Huiyan (HXMT (Hard X-ray Modulation Telescope)) Mission

Mission details for Huiyan (HXMT (Hard X-ray Modulation Telescope))
TypeAstrophysics
OrbitLow Earth Orbit

Hard X-ray Modulation Telescope (HXMT) is a Chinese X-ray space observatory. This will be China's first astronomy satellite, and it is tasked with observation of black holes, neutron stars and other phenomena based on their X-ray and gamma ray emissions.

Launch Pad & Location

Launch Area 94 (SLS-2 / 603)

Jiuquan Satellite Launch Center, People's Republic of China

Launch statistics for Launch Area 94 (SLS-2 / 603) at Jiuquan Satellite Launch Center, People's Republic of China
Launches138
Orbital Launch Attempts138
Total Launches298

Jiuquan Satellite Launch Center is a Chinese spaceport located between the Ejin, Alxa, Inner Mongolia and Hangtian Town, Jinta County, Jiuquan, Gansu Province. It is part of the Dongfeng Aerospace City (Base 10).

CASC Long March 4B Rocket

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.

Rocket specifications for CASC Long March 4B
Length44.1 m
Diameter3.4 m
Stages3
Launch Mass249.0 T
Takeoff Thrust2,961.0 kN
LEO Capacity4,200 kg
GTO Capacity1,500 kg
Maiden Flight5/10/1999

Learn more about the CASC Long March 4B Rocket

About CASC

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.

Launch statistics for CASC
Total Launches617
Successful601
Failed16
Pending8
Consecutive Success8

Learn more about CASC

Frequently Asked Questions

When was the CASC Long March 4B Huiyan (HXMT (Hard X-ray Modulation Telescope)) launch scheduled?

The CASC Long March 4B Huiyan (HXMT (Hard X-ray Modulation Telescope)) launch was scheduled for:
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Where can I watch the CASC Long March 4B Huiyan (HXMT (Hard X-ray Modulation Telescope)) launch video?

You can watch the CASC Long March 4B launch video on this page. The official video includes full mission coverage with multiple camera angles, onboard views, and expert commentary covering pre-launch procedures, liftoff, stage separation, and payload deployment.

Where did the CASC Long March 4B Huiyan (HXMT (Hard X-ray Modulation Telescope)) mission launch from?

The CASC Long March 4B rocket launched from Launch Area 94 (SLS-2 / 603) at Jiuquan Satellite Launch Center, People's Republic of China. Jiuquan Satellite Launch Center is a Chinese spaceport located between the Ejin, Alxa, Inner Mongolia and Hangtian Town, Jinta County, Jiuquan, Gansu Province. It is part of the Dongfeng Aerospace City (Base 10).

What rocket was used for the Huiyan (HXMT (Hard X-ray Modulation Telescope)) mission?

The Huiyan (HXMT (Hard X-ray Modulation Telescope)) mission launched aboard a CASC Long March 4B rocket. 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. Detailed rocket specifications and performance data are available in the rocket details above.

What weather conditions could have delayed the CASC Long March 4B Huiyan (HXMT (Hard X-ray Modulation Telescope)) launch?

The CASC Long March 4B Huiyan (HXMT (Hard X-ray Modulation Telescope)) launch could have been delayed by various weather conditions including lightning within 10 nautical miles, high winds (especially upper-level winds), thick cloud layers, precipitation, and poor visibility. Weather must be favorable at the launch site, downrange landing zones, and abort landing sites.

How can I get updates if the CASC Long March 4B Huiyan (HXMT (Hard X-ray Modulation Telescope)) launch was delayed?

This page was updated in real-time with the latest CASC Long March 4B launch status, including any delays or scrubs for the Huiyan (HXMT (Hard X-ray Modulation Telescope)) mission. You can also check our space launch schedule for historical launch information. Our mobile app provides push notifications for instant alerts about launch status changes. Official CASC live streams provided the most immediate range updates during the launch window.

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