JAXA / MITSUBISHI HEAVY INDUSTRIES · VEHICLE PROFILE · DATA AS OF 2026-05-14
H3
Operational
Expendable
Medium
7
Flights
Success / Partial / Failure
71.43%
Success Rate
5/7 flights
—
Fleet Leader
No booster telemetry
Dec 22, 2025
Cadence
Last completed flight
RELIABILITY & S/PF/F SPLIT
71.43%
Overall success rate · Wilson 95% LB 35.89%
5
Success
0
Partial Failure
2
Failure
0
Scrubbed
Days since last failure143 days
Current success streak0
Last completed flightDec 22, 2025
Methodology IP
S/PF/F split is non-negotiable methodology. Partial failures are NOT collapsed into failures. A partial (e.g. payload delivered to wrong orbit, booster lost on otherwise-successful flight) is treated as a distinct outcome for underwriting. See /methodology/.
RECENT FLIGHTS
| Date | Mission | Payload | Outcome | |
|---|---|---|---|---|
| Dec 22, 2025 | QZS-5 | — · 23,000 kg | Failure | Briefing → |
| Oct 26, 2025 | HTV-X1 | — · 23,000 kg | Success | |
| Feb 02, 2025 | QZS-6 | — · 23,000 kg | Success | |
| Nov 04, 2024 | DSN 3 | — · 23,000 kg | Success | |
| Jul 01, 2024 | ALOS-4 | — · 23,000 kg | Success | |
| Feb 17, 2024 | CE-SAT-1E | — · 23,000 kg | Success | |
| Mar 07, 2023 | ALOS-3 | — · 23,000 kg | Failure |
PAYLOAD & ORBIT MIX
161.0K kg
Total mass lifted
—
Most-flown orbit
0% gov
Gov / commercial split
0
Crewed flights
OPERATOR CONTEXT
OperatorJAXA / Mitsubishi Heavy Industries
Fleet success rate77.78%
Total fleet launches18
Vehicles operated5
REGISTRY DATA
First flight2023-03-07
Registry launches8 (as of 2025-12-31)
ClassMedium
Height63 m
Fairing diameter5.2 m
First-stage propellanthydrolox
ReusabilityExpendable
List price$50.0M
Payload capacity (kg)
LEO23,000 kg
GTO6,500 kg
SSO4,000 kg
Source: space_launch_vehicle_registry.json · Operator page →
METHODOLOGY
Per-vehicle reliability is aggregated from the AstraVeris launch_events table with Wilson 95% lower-bound error estimates. Subsystem outcomes are extracted by a local Gemma model from primary-source articles — outcomes are never fabricated; absence of a row means "not tracked". Aspirational vehicles (not yet flown) carry registry-only metadata with explicit "Not yet flown" banners. Full specifications: /methodology/. Licensing terms: /data-licensing/.
Not investment advice. For insurance underwriting, verify against operator investigation reports.