Mitsubishi Heavy IndustriesH3-24Yoshinobu Launch Complex LP-2, Tanegashima Space Center, Japan
HTV-X1
Launched
October 26, 2025 · 00:00 UTC
Image: Mitsubishi Heavy Industries
Summary
HTV-X1 launched on a Mitsubishi Heavy Industries H3-24 from Yoshinobu Launch Complex LP-2, Tanegashima Space Center, Japan on October 26, 2025 at 00:00 UTC. It was Mitsubishi Heavy Industries's 55th launch, 2nd this year and humanity's 7,096th orbital launch attempt. It was the 1st H3-24 flight. The payload was bound for low Earth orbit (LEO). HTV-X1, one of 2 catalogued objects, reached a 309 × 341 km orbit inclined 51.6°. The spacecraft was HTV-X1 (HTV-X1). 2 objects from this launch are catalogued, all of them payloads.
- Watch
- Booster
- No booster details on record.
- Mission
- Resupply · Low Earth Orbit (LEO)for JAXA
- Milestone
- 1st H3-24 flightMitsubishi Heavy Industries's 55th launch2nd this yearhumanity's 7,096th orbital launch attempt247th orbital launch attempt this year
Spacecraft
HTV-X1 (HTV-X1)
Spacecraft used for the maiden flight of the HTV-X Cargo Resupply Vehicle.
- Destination: ISS
- Mission length: 212 days
- Docked October 29, 2025 at Harmony nadir
The HTV-X spacecraft will burn up upon entering Earth's atmosphere.
Webcast
Flight preview
Orbit: as tracked
HTV-X1 · NORAD 66174 · 2025-241 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- TBA - TO BE ASSIGNED
- Object ID
- 2025-241A
- Epoch
- 2025-10-26 22:07:08 UTC
- Mean motion
- 15.84447981 rev/day
- Eccentricity
- 0.0023683
- Inclination
- 51.6247°
- Ascending node
- 14.4109°
- Arg. of perigee
- 147.0113°
- Mean anomaly
- 213.2374°
- Element set
- 999
- Rev at epoch
- 15
- B*
- 0.00027332
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: LEO.
Flight timeline
- T−0Liftoff
- T+1M58SBooster Separation
- T+2M55SFairing Separation
- T+4M52SMECO
- T+4M59SStage 2 Separation
- T+5M12SSES-1
- T+13M45SSECO-1
- T+14M13SPayload Separation
Catalogued objects
2 catalogued: 2 payloads; 1 still in orbit
- HTV-X1 · NORAD 66174
- Tenkoh-2 · NORAD 68261 · in orbit
Data from J. McDowell, planet4589.org
About this launch
First flight of the upgraded Japanese HTV-X spacecraft designed to resupply the International Space Station.
Pad
Yoshinobu Launch Complex LP-2, Tanegashima Space Center, Japan
15th launch from Yoshinobu Launch Complex LP-2, 2nd this year · 96th from Tanegashima Space Center, Japan
Local pad time at liftoff: Oct 26, 9:00 AM GMT+9, in daylight
18 launches from this pad · 99 from Tanegashima Space Center, Japan
265 days after the previous launch from this pad
All launches from Tanegashima Space Center, JapanOpen in maps
Updates
Launch success.
Show 9 earlier updates
Spacecraft separation.
Cosmic_Penguin · 10/26/2025 · source
Official Webcast by JAXA | 宇宙航空研究開発機構 has started
LL2 · 10/26/2025 · source
Liftoff.
Cosmic_Penguin · 10/26/2025 · source
Official Webcast by JAXA | 宇宙航空研究開発機構 has started
LL2 · 10/25/2025 · source
Tweaked T-0.
Cosmic_Penguin · 10/24/2025 · source
Rescheduled for October 26.
Cosmic_Penguin · 10/23/2025 · source
Launch delayed due to launch site weather, new date TBD.
Cosmic_Penguin · 10/19/2025 · source
Tweaked T-0.
Cosmic_Penguin · 10/16/2025 · source
Tweaked T-0
Nosu · 10/14/2025 · source
Questions
When did HTV-X1 launch?
HTV-X1 launched on October 26, 2025 at 00:00 UTC.
Where can I watch HTV-X1?
Coverage: Launch of New unmanned cargo transfer spacecraft1（HTV-X1） aboard the 7th H3 Launch Vehicle (H3 F7); JAXA HTV-X1 Cargo Launch; 新型宇宙ステーション補給機1号機（HTV-X1）／H3ロケット7号機打上げライブ中継. Watch the replay
What rocket launched HTV-X1?
H3-24, flown by Mitsubishi Heavy Industries. H3-24 spec sheet
Where did HTV-X1 launch from?
Yoshinobu Launch Complex LP-2, Tanegashima Space Center, Japan. Liftoff was Oct 26, 9:00 AM GMT+9 local time at the pad.
What orbit did HTV-X1 reach?
HTV-X1, one of 2 catalogued objects, reached a 309 × 341 km orbit inclined 51.6°.
How many satellites did HTV-X1 launch?
2 payloads from this launch are catalogued, 1 of them still in orbit (Data from J. McDowell, planet4589.org).
Which program is HTV-X1 part of?
International Space Station. About International Space Station