Launch success.
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Historical mission record
This page records H3-24 | HTV-X1 and its reported outcome: Launch Successful. The date above is a historical record.
Source record updated . This is a source update, not a confirmed launch time.
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Mission status
Launch Successful
Status reported by the mission data provider.
LAUNCH SITETanegashima Space Center, Japan
Mission
First flight of the upgraded Japanese HTV-X spacecraft designed to resupply the International Space Station.
- Launch vehicle
- H3-24
- Mission type
- Resupply
- Destination orbit
- Low Earth Orbit
- Spacecraft
- HTV-X1
- Destination
- ISS
- Launch pad
- Yoshinobu Launch Complex LP-2
- Provider
- Mitsubishi Heavy Industries
- Programs
- International Space Station
The vehicle
Published configuration and flight history.
Launch vehicle
H3-24
The H3 Launch Vehicle is an expendable launch system in development in Japan. Each H3 booster configuration has a two-digit and a letter designation that indicates the features of that configuration. The first digit represents the number of LE-9 engines on the main stage, either "2" or "3". The second digit indicates the number of SRB-3 solid rocket boosters attached to the base of the rocket, and can be "0", "2" or "4". All layouts of solid boosters are symmetrical. The letter in the end shows the length of the payload fairing, either short "S" or long "L". For example, an H3-24L has two engines, four solid rocket boosters, and a long fairing, whereas an H3-30S has three engines, no solid rocket boosters, and a short fairing.
- Height
- 63 m
- Diameter
- 5.27 m
- Stages
- 2
- Recorded launches
- 1
- First flight
- 2025-10-26
Recorded timing
This is a mission record, not an upcoming calendar appointment.
Instantaneous windowPublished target
SCHEDULED MOMENT
A single scheduled moment. The schedule may change before launch.
Flight timeline
Planned sequence, not live telemetry. Times are relative to the launch target.
- T+00:00:00
Liftoff
- T+00:01:58
Booster Separation
- T+00:02:55
Fairing Separation
- T+00:04:52
MECO
- T+00:04:59
Stage 2 Separation
- T+00:05:12
SES-1
Show the full sequence (8 events)
- T+00:13:45
SECO-1
- T+00:14:13
Payload Separation
Launch site & orbit
Tanegashima Space Center, Japan
The mission in perspective
Launch site & orbit
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Coverage & sources
Links supplied by the mission data provider.
Coverage and times may change.
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