JAXA / MITSUBISHI HEAVY INDUSTRIES · VEHICLE PROFILE · DATA AS OF 2026-07-28
H3
Operational
Expendable
Medium
8
Flights
Success / Partial / Failure
75.00%
Success Rate
6/8 flights
—
Fleet Leader
No booster telemetry
Jun 12, 2026
Cadence
Last completed flight
RELIABILITY & S/PF/F SPLIT
75.00%
Overall success rate · Wilson 95% LB 40.93%
6
Success
0
Partial Failure
2
Failure
0
Scrubbed
Days since last failure218 days
Current success streak1
Last completed flightJun 12, 2026
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 | |
|---|---|---|---|---|
| Jun 12, 2026 | H3-30 Test Flight | SSO · 23,000 kg | Success | |
| 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
184.0K kg
Total mass lifted
SSO
Most-flown orbit
0% gov
Gov / commercial split
0
Crewed flights
SSO1 (100.0%)
OPERATOR CONTEXT
OperatorJAXA / Mitsubishi Heavy Industries
Fleet success rate82.22%
Total fleet launches90
Vehicles operated18
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.