Long March 4B
Long March familyChina Aerospace Science and Technology CorporationActive
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.
Specifications
- Thrust
- 2,961 kN
- Height
- 44.1 m
- Diameter
- 3.35 m
- Launch mass
- 249 t
- Stages
- 3
- LEO capacity
- 4,200 kg
- GTO capacity
- 1,500 kg
Specifications from Launch Library. Figures the operator has not published are omitted.
Flight record
59flightswith a definitive outcome
98.3%success rate58 of 59
1failureincluding partial failures
39success streakcurrent
First flight May 10, 1999 · latest October 23, 2026 · 19:25 UTC
Counted from padside's own launch record, the same basis as the stats page.
Flights per year
- Successful
- Failed
Show the numbers for Long March 4B flights per year
| Year | Successful | Failed | Total |
|---|---|---|---|
| 1999 | 2 | 0 | 2 |
| 2000 | 1 | 0 | 1 |
| 2001 | 0 | 0 | 0 |
| 2002 | 2 | 0 | 2 |
| 2003 | 1 | 0 | 1 |
| 2004 | 2 | 0 | 2 |
| 2005 | 0 | 0 | 0 |
| 2006 | 1 | 0 | 1 |
| 2007 | 1 | 0 | 1 |
| 2008 | 2 | 0 | 2 |
| 2009 | 0 | 0 | 0 |
| 2010 | 1 | 0 | 1 |
| 2011 | 3 | 0 | 3 |
| 2012 | 2 | 0 | 2 |
| 2013 | 1 | 1 | 2 |
| 2014 | 4 | 0 | 4 |
| 2015 | 2 | 0 | 2 |
| 2016 | 2 | 0 | 2 |
| 2017 | 1 | 0 | 1 |
| 2018 | 2 | 0 | 2 |
| 2019 | 4 | 0 | 4 |
| 2020 | 5 | 0 | 5 |
| 2021 | 5 | 0 | 5 |
| 2022 | 2 | 0 | 2 |
| 2023 | 1 | 0 | 1 |
| 2024 | 4 | 0 | 4 |
| 2025 | 4 | 0 | 4 |
| 2026 | 3 | 0 | 3 |