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The global launch market reached $14.1 billion in 2024 — up 34% since 2021.
| Attribute | |||
|---|---|---|---|
| Company | JAXA / Mitsubishi Heavy Industries | Relativity Space | Interstellar Technologies |
| Country | 🇯🇵 Japan | 🇺🇸 USA | 🇯🇵 Japan |
| Status | Active | In Development | In Development |
| Vehicle class | Heavy | Heavy | Small |
| Propellant | LH₂ / LOX (LE-9 first stage + LE-5B-3 second stage) | LOX / methane | Liquid biomethane (LBM) / LOX |
| Reusable | No | Yes | No |
| Stages | 2 | 2 | 2 |
| First flight | 2023 | 2026 | 2027 |
| Payload to LEO | 16,500 kgas of [1]H3-24 (2 SRB-3 + 4 LE-9 engines) configuration. H3-30 baseline: 16,500 kg. | 33,500 kg expendable / 23,500 kg with a reusable first stageas of [1]First flight targeted 2026 (stated plan, not yet confirmed flown as of this research). ↑ Best | 250 kgas of [1]500 km SSO. No flight attempts as of this research — follows the company's successful suborbital MOMO sounding-rocket program. A larger orbital vehicle, DECA, was announced January 2023. |
| Payload to GTO | 6,500 kgas of [1] ↑ Best | — | — |
| Height | 57 mas of [1] | 87 mas of [1] ↑ Best | — |
| Liftoff mass | 574 tas of [1]H3-24S configuration ↑ Best | — | — |
| Success rate | 78%as of [2]~7/9 successes. TF1 (Mar 7, 2023) first flight failure (2nd-stage ignition, DAICHI-3 lost). F8 (Dec 23, 2025) QZS-5 lost to 2nd-stage relight anomaly. H3-30 maiden flight (Jun 12, 2026) successful. ↑ Best | — | — |
| Total flights | 9as of [3]Includes the H3-30 (three LE-9 engines, no SRBs) maiden flight on Jun 12, 2026 ↑ Best | — | — |
| Cost / kg LEO | ~$5,500/kgas of [1]Target unit price ¥5B (~$35M at ¥145/$); roughly half H-IIA's per-launch cost | ~$55M per launch (estimate)as of [1]Total launch price estimate, not a per-kg figure. ↓ Cheapest | — |
| Summary | Japan's next-generation flagship rocket designed to halve H-IIA costs. Uses LE-9 engines burning liquid hydrogen — the highest-performing expander-cycle engines in the world. First flight TF1 (Mar 7, 2023) failed; first success was TF2 (Feb 17, 2024). HTV-X1 cargo mission to ISS (Oct 2025) demonstrated operational readiness, and the solid-booster-free H3-30 variant debuted Jun 12, 2026. | Relativity Space's Falcon-9-class successor to Terran 1, partially 3D-printed, with 13 Aeon R methalox engines on a reusable first stage; second stage and fairing expendable. | A liquid-biomethane orbital smallsat launcher from Interstellar Technologies, Japan's most established private rocket startup by suborbital flight heritage, though not yet flown to orbit. |
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.