# Long March 4B

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 expendable orbital launch vehicle. Launched from Launch Complex 1 at the Taiyuan Satellite Launch Center, it is a 3-stage launch vehicle, used mostly to place satellites into low Earth orbit and Sun-synchronous orbits. It was first launched on 10 May 1999, with the FY-1C weather satellite, which would later be the target in the 2007 Chinese anti-satellite missile test.
The Chang Zheng 4B experienced its only launch failure on 9 December 2013, with the loss of the CBERS-3 satellite.

## Launch statistics

Number of launches, by year.
* Failure
* Partial failure
* Success
* Planned

## List of launches

| Flight number | Serial number | Date and time (UTC) | Launch site | Payload | Orbit | Result |
| 1 | Y2 | 10 May 1999 01:33 | Taiyuan LA-7 | Fengyun 1C Shijian 5 | SSO | Success |
| 2 | Y1 | 14 October 1999 03:15 | Taiyuan LA-7 | CBERS-1 SACI-1 | SSO | Success |
| 3 | Y3 | 1 September 2000 03:25 | Taiyuan LA-7 | Ziyuan II-01 | SSO | Success |
| 4 | Y5 | 15 May 2002 01:50 | Taiyuan LA-7 | Fengyun 1D HaiYang-1A | SSO | Success |
| 5 | Y6 | 27 October 2002 03:17 | Taiyuan LA-7 | Ziyuan II-02 | SSO | Success |
| 6 | Y4 | 21 October 2003 03:16 | Taiyuan LA-7 | CBERS-2 Chuangxin 1-01 | SSO | Success |
| 7 | Y7 | 8 September 2004 23:14 | Taiyuan LA-7 | Shijian 6-01A Shijian 6-01B | SSO | Success |
| 8 | Y8 | 6 November 2004 03:10 | Taiyuan LA-7 | Ziyuan II-03 | SSO | Success |
| 9 | Y16 | 23 October 2006 23:34 | Taiyuan LA-7 | Shijian 6-02A Shijian 6-02B | SSO | Success |
| 10 | Y17 | 19 September 2007 03:26 | Taiyuan LA-7 | CBERS-2B | SSO | Success |
| 11 | Y22 | 25 October 2008 01:15 | Taiyuan LA-9 | Shijian 6-03A Shijian 6-03B | SSO | Success |
| 12 | Y20 | 15 December 2008 03:22 | Taiyuan LA-9 | Yaogan 5 | SSO | Success |
| 13 | Y23 | 6 October 2010 00:49 | Taiyuan LA-9 | Shijian 6-04A Shijian 6-04B | SSO | Success |
| 14 | Y14 | 15 August 2011 22:57 | Taiyuan LA-9 | HaiYang-2A | SSO | Success |
| 15 | Y21 | 9 November 2011 03:21 | Taiyuan LA-9 | Yaogan 12 Tianxun 1 | SSO | Success |
| 16 | Y15 | 22 December 2011 03:26 | Taiyuan LA-9 | Ziyuan I-02C | SSO | Success |
| 17 | Y26 | 9 January 2012 03:17 | Taiyuan LA-9 | Ziyuan 3-01 VesselSat-2 | SSO | Success |
| 18 | Y12 | 10 May 2012 07:06 | Taiyuan LA-9 | Yaogan 14 Tiantuo 1 | SSO | Success |
| 19 | Y25 | 25 October 2013 03:50 | Jiuquan LA-4/SLS-2 | Shijian 16-01 | LEO | Success |
| 20 | Y10 | 9 December 2013 03:26 | Taiyuan LA-9 | CBERS-3 | SSO | Failure |
| One of the two third-stage engines shut down prematurely, so that the satellite failed to reach orbit. The cause was traced to foreign debris that blocked the engine's fuel intake. ||||||
| 21 | Y27 | 19 August 2014 03:15 | Taiyuan LA-9 | Gaofen 2 BRITE-PL2 (Heweliusz) | SSO | Success |
| 22 | Y28 | 8 September 2014 03:22 | Taiyuan LA-9 | Yaogan 21 Tiantuo 2 | SSO | Success |
| 23 | Y32 | 7 December 2014 03:26 | Taiyuan LA-9 | CBERS-4 | SSO | Success |
| 24 | Y29 | 27 December 2014 03:22 | Taiyuan LA-9 | Yaogan 26 | SSO | Success |
| 25 | Y30 | 26 June 2015 06:22 | Taiyuan LA-9 | Gaofen 8 | SSO | Success |
| 26 | Y24 | 8 November 2015 07:06 | Taiyuan LA-9 | Yaogan 28 | SSO | Success |
| 27 | Y33 | 30 May 2016 03:17 | Taiyuan LA-9 | Ziyuan 3-02 ÑuSat-1/-2 | SSO | Success |
| 28 | Y35 | 29 June 2016 03:21 | Jiuquan LA-4/SLS-2 | Shijian 16-02 | LEO | Success |
| 29 | Y31 | 15 June 2017 03:00 | Jiuquan LA-4/SLS-2 | HXMT ÑuSat-3 Zhuhai-1 | LEO | Success |
| 30 | Y37 | 31 July 2018 03:00 | Taiyuan LA-9 | Gaofen 11-01 | SSO | Success |
| 31 | Y34 | 24 October 2018 22:57 | Taiyuan LA-9 | Haiyang-2B | SSO | Success |
| 32 | Y36 | 29 April 2019 22:52 | Taiyuan LA-9 | Tianhui-2-01 A/B | SSO | Success |
| 33 | Y39 | 12 September 2019 03:26 | Taiyuan LA-9 | Ziyuan I-02D | SSO | Success |
| 34 | Y38 | 3 November 2019 03:22 | Taiyuan LA-9 | Gaofen 7 Xiaoxiang 1-08 | SSO | Success |
| 35 | Y44 | 20 December 2019 03:22 | Taiyuan LA-9 | CBERS-4A ETRSS-1 | SSO | Success |
| 36 | Y43 | 3 July 2020 03:10 | Taiyuan LA-9 | Gaofen Multi-Mode BY-70-2 | SSO | Success |
| 37 | Y45 | 25 July 2020 03:13 | Taiyuan LA-9 | Ziyuan 3-03 Tianqi 10 NJU-HKU 1 | SSO | Success |
| 38 | Y46 | 7 September 2020 05:57 | Taiyuan LA-9 | Gaofen 11-02 | SSO | Success |
| A booster presumably coming from this launch fell near populated areas. ||||||
| 39 | Y41 | 21 September 2020 05:40 | Jiuquan LA-4/SLS-2 | Haiyang-2C | LEO | Success |
| 40 | Y42 | 27 September 2020 03:23 | Taiyuan LA-9 | Huanjing-2A Huanjing-2B | SSO | Success |
| 41 | Y49 | 8 April 2021 23:01 | Taiyuan LA-9 | Shiyan 6-03 | SSO | Success |
| 42 | Y48 | 19 May 2021 04:03 | Jiuquan LA-4/SLS-2 | Haiyang-2D | LEO | Success |
| 43 | Y50 | 18 August 2021 22:32 | Taiyuan LA-9 | Tianhui-2 02A Tianhui-2 02B | SSO | Success |
| 44 | Y52 | 20 November 2021 01:51 | Taiyuan LA-9 | Gaofen 11-03 | SSO | Success |
| 45 | Y47 | 10 December 2021 00:11 | Jiuquan LA-4/SLS-2 | Shijian-6 05A Shijian-6 05B | SSO | Success |
| 46 | Y40 | 4 August 2022 03:08 | Taiyuan LA-9 | TECIS Minxing Shaonian Jiaotong-4 | SSO | Success |
| 47 | Y55 | 27 December 2022 07:37 | Taiyuan LA-9 | Gaofen 11-04 | SSO | Success |
| 48 | Y51 | 16 April 2023 01:36 | Jiuquan LA-4/SLS-2 | Fengyun 3G | LEO | Success |
| 49 | Y58 | 19 July 2024 03:03 | Taiyuan LA-9 | Gaofen 11-05 | SSO | Success |
| 50 | Y72 | 16 August 2024 07:35 | Xichang LA-3 | Yaogan 43-01A/B/C/D/E/F/G/H/I | LEO | Success |
| 51 | Y73 | 3 September 2024 01:22 | Xichang LA-3 | Yaogan 43-02A/B/C/D/E/F | LEO | Success |
| 52 | Y53 | 13 November 2024 22:42 | Taiyuan LA-9 | Haiyang 4A | SSO | Success |
| Source: Gunter's Space Page |||||||