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The global launch market reached $14.1 billion in 2024 — up 34% since 2021.
| Attribute | ||
|---|---|---|
| Company | Northrop Grumman | JAXA / IHI Aerospace |
| Country | 🇺🇸 USA | 🇯🇵 Japan |
| Status | Retired | Retired |
| Vehicle class | Medium | Small |
| Propellant | RP-1 / LOX (RD-181 first stage) | Solid (HTPB — all stages) |
| Reusable | No | No |
| Stages | 2 | 3 |
| First flight | 2013 – 2023 | 2013 – 2022 |
| Payload to LEO | 8,000 kgas of [1]Antares 230+ configuration; primarily used for ~3,500–3,800 kg Cygnus cargo ↑ Best | 590 kgas of [1]500 kg to SSO. Enhanced Epsilon (from E-4) added 700 kg LEO via PBS liquid kick stage. |
| Payload to GTO | — | — |
| Height | 41 mas of [1] ↑ Best | 26 mas of [1] |
| Liftoff mass | 298 tas of [1] ↑ Best | 96 tas of [1] |
| Success rate | 91.7%as of [2]11/12 successes; Orb-3 (CRS-3) exploded at liftoff Oct 2014 ↑ Best | 83.3%as of [2]5/6 successes. E-6 (Oct 12, 2022) PBS upper stage failed to ignite, eight satellites lost. Epsilon S (next-generation) ground test anomaly Jan 2023 effectively ended the programme. |
| Total flights | 12as of [2]Final Antares flight was NG-19 (Aug 1, 2023). NG-20+ moved to Falcon 9 due to Antares RD-181 engine supply disruption (Russia sanctions). ↑ Best | 6as of [2] |
| Cost / kg LEO | — | — |
| Summary | Primary launch vehicle for Cygnus ISS cargo missions from 2013–2023. Its Ukrainian-built Zenit-derived first stage and Russian RD-181 engines became untenable after the 2022 invasion of Ukraine. Northrop switched NG-20 onward to Falcon 9 while Antares 330 (with Firefly Miranda engines) is in development. | JAXA's small solid-fuel rocket derived from the M-V rocket heritage. Designed for highly autonomous operations — launch preparations could be managed by just 8 people. The sixth and final E-6 mission (Oct 2022) failed when the PBS kick stage didn't ignite; a ground explosion during Epsilon S testing (Jan 2023) ended the programme. |
28 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.