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| Attribute | Long March 6 (incl. 6A / 6C variants) 🇨🇳 China Trust: Operator-primaryⓘ Last verified Active · Last updated 2026-07-26Remove × | ||
|---|---|---|---|
| Company | ULA | SAST (Shanghai Academy of Spaceflight Technology) / CASC | CASC / CALT |
| Country | 🇺🇸 USA | 🇨🇳 China | 🇨🇳 China |
| Status | Active | Active | Active |
| Vehicle class | Medium | Medium | Heavy |
| Propellant | RP-1 / LOX (RD-180); LH₂ / LOX (Centaur III) | RP-1 / LOX (stages 1–2); N2O4/UDMH (stage 3, base variant) | LH₂ / LOX (YF-77 core) + RP-1/LOX (YF-100 boosters) |
| Reusable | No | No | No |
| Stages | 2 | 3 | 2 |
| First flight | 2002 | 2015 | 2016 |
| Payload to LEO | 18,850 kgas of [1]401 configuration. Maximum 401/551 stretch to 20,520 kg. 551 max 29,420 kg (5-solid boosters). | 1,080 kg to SSO (base Long March 6)as of [1]Long March 6A (4 solid boosters, elongated stage 1): at least 4,000 kg to SSO. Long March 6C: similar class without the boosters. Both variants first flew from Taiyuan Satellite Launch Center. | 25,000 kgas of [1]CZ-5B variant (no upper stage) delivers 25,000 kg LEO for Tiangong station modules ↑ Best |
| Payload to GTO | 8,900 kgas of [1]551 configuration (maximum performance) | — | 14,000 kgas of [1]CZ-5 variant (with YF-75D upper stage) ↑ Best |
| Height | 58.3 mas of [1]401 configuration ↑ Best | 29 m (base variant)as of [1] | 56.97 mas of [1] |
| Liftoff mass | 334 tas of [1]401 configuration without strap-ons | 103 t (base variant)as of [1] | 869 tas of [1] ↑ Best |
| Success rate | 99.1%as of [2]108 full successes + 1 partial failure (NROL-30, Jun 2007 — payload still reached usable orbit) across 109 launches | 100% (base Long March 6, 15/15)as of [1]6A first flew 2022-03-29, 6C first flew 2024-05-07; both maintain perfect records within their own flight histories as of this date. ↑ Best | 94.1%as of [2]16/17 successes (10 CZ-5 + 7 CZ-5B). Failure: CZ-5 Y2 (Jul 2017, engine anomaly); loss of Shijian-18 satellite. |
| Total flights | 109as of [2]No longer sold but still flying its backlog: ~8 launches remained as of Apr 2026 (6 Starliner + 2 Amazon Leo); most recent flight Amazon Leo LA-07 (May 29, 2026), ~7 remain ↑ Best | 15 (base variant)as of [1] | 17as of [2] |
| Cost / kg LEO | — | — | — |
| Summary | ULA's workhorse since 2002 and the longest-serving active US rocket. Launched Mars Science Laboratory (Curiosity), OSIRIS-REx, Solar Orbiter, Lucy, New Horizons, and the Boeing Starliner. Production ended in 2024 and ULA no longer sells the vehicle, but it continues flying a sold-out backlog of Starliner and Amazon Leo missions into the late 2020s. | A family of medium-lift launchers from SAST serving China's growing SSO/LEO commercial and government satellite demand, with the 6A and 6C variants adding solid boosters or a simplified expendable configuration respectively. | China's most powerful operational rocket and the backbone of its flagship space programs. Launched Tianwen-1 to Mars, Chang'e 5 sample return, Chang'e 6 far-side sample return, all Tiangong core and lab modules, and the Xuntian space telescope. The CZ-5B variant delivers entire station modules in a single flight. |
48 launch vehicles across 10 countries — active, retired, and in development — with primary-source citations from manufacturer user guides and agency press kits. Pure URL state: bookmark or share the link and the comparison reproduces exactly.