← All launches
Launch SuccessfulMitsubishi Heavy Industries

H3-24: HTV-X1

First flight of the upgraded Japanese HTV-X spacecraft designed to resupply the International Space Station.

Sunday, 26 October 202500:00 UTC
H3-24: HTV-X1

Mission Data

Mitsubishi Heavy Industries
🇯🇵Mitsubishi Heavy IndustriesEst. 1884
Launch VehicleH3-24
Vehicle FamilyH3
Vehicle Record2 of 2 launches (100%)
Provider TypeCommercial
Agency Record57 successes / 2 failures (97%)
Success Streak3 consecutive
ProgramInternational Space Station · Human Spaceflight
Mission TypeResupply
Target OrbitLow Earth Orbit
Launch PadYoshinobu Launch Complex LP-2
Location🇯🇵 Tanegashima Space Center, Japan JPN
Orbital Launches This Year#247
Agency Launches This Year#2
Launches From This Pad19
Launches From This Site100
Status Note

The launch vehicle successfully inserted its payload(s) into the target orbit(s).

About H3-24

The H3 Launch Vehicle is a Japanese expendable launch system. 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.

Launch updates

  1. Launch success.

    Source ↗
  2. Spacecraft separation.

  3. Official Webcast by JAXA | 宇宙航空研究開発機構 has started

  4. Liftoff.

  5. Official Webcast by JAXA | 宇宙航空研究開発機構 has started

  6. Tweaked T-0.

    Source ↗
  7. Rescheduled for October 26.

    Source ↗
  8. Launch delayed due to launch site weather, new date TBD.

    Source ↗
  9. Tweaked T-0.

    Source ↗
  10. Tweaked T-0

    Source ↗

Launch Site

Yoshinobu Launch Complex LP-2 · 30.4009°N 130.9756°E

Launch data from Launch Library 2 by The Space Devs.