Rocket file · LV-28
Atlas V 421
Atlas V 421 is an expendable launch vehicle built by United Launch Alliance. It stands 58.3 m tall, lifts 14,067 kg to low Earth orbit, first flew on 11 October 2007. It has flown 9 times with 9 successes, a success rate of 100.0%. It has nothing on the Launch Library 2 schedule right now.
Specification
Vehicle spec sheet
As listed by Launch Library 2. The cost is Launch Library’s figure, not a quoted price. Figures for rockets outside the sixty most-flown were last read on 2026-11-05.
Flight record
Reliability
About Atlas V 421
Atlas V is an expendable launch system in the Atlas rocket family. It was formerly operated by Lockheed Martin and is now operated by United Launch Alliance (ULA), a joint venture with Boeing. Each Atlas V rocket uses a Russian-built RD-180 engine burning kerosene and liquid oxygen to power its first stage and an American-built RL10 engine burning liquid hydrogen and liquid oxygen to power its Centaur upper stage. The RD-180 engines are provided by RD Amross, while Aerojet Rocketdyne provides both the RL10 engines and the strap-on boosters used in some configurations. The 421 version uses a 4m wide fairing, 2 solid rocket boosters and one engine on the Centaur stage.
Upcoming flights
Manifest
Atlas V 421 is retired, and no flight is filed.
All upcoming launchesAtlas V 421 in the archive
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Common questions
- How many times has Atlas V 421 flown?
- 9 times, with 9 successes and 0 failures.
- What is Atlas V 421's success rate?
- 100.0%. That's 9 successful flights out of 9 attempts.
- How much can Atlas V 421 lift to orbit?
- Launch Library 2 lists Atlas V 421 at 14,067 kg to low Earth orbit and 6,890 kg to geostationary transfer orbit.
- Is Atlas V 421 reusable?
- No. Launch Library 2 lists Atlas V 421 as expendable, so no stage is recovered to fly again.