Success
HTV-X1
Resupply
Mitsubishi Heavy Industries(MHI)CommercialH3-24
LEOorbit
First flight of the upgraded Japanese HTV-X spacecraft designed to resupply the International Space Station.
Sunday, October 26, 2025 at 12:00 AM
Replay
Flight Timeline
- T+00:00Liftoff
- T+01:58Booster Separation
- T+02:55Fairing Separation
- T+04:52MECO
- T+04:59Stage 2 Separation
- T+05:12SES-1
- T+13:45SECO-1
- T+14:13Payload Separation
Mission details
The International Space Station programme is tied together by a complex set of legal, political and financial agreements between the sixteen nations involved in the project, governing ownership of the various components, rights to crewing and utilization, and responsibilities for crew rotation and resupply of the International Space Station. It was conceived in 1984 by President Ronald Reagan, during the Space Station Freedom project as it was originally called.
Nov 20, 1998 — ongoing
Orbital Attempt
#7,096
MHI Mission
#55
Pad Launch
#15
Location Launch
#96
Designator
2025-241
Launch Window
NET
Oct 26, 2025, 12:00 AM
Precision
Second
Schedule Changes
1 update
H3-24 Specs
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.
Length
63 m
Diameter
5.27 m
Thrust
12,142 kN
GTO Capacity
7,900 kg
Launch Cost
$50M
Reusable
No
Maiden Flight
2025
Total Launches
1
Successful
1
Failed
0
Consecutive Success
1
Maiden flight: Oct 26, 2025
Social Flight Log
- Oct 26, 2025, 3:18 AM
Launch success.
Source - Oct 26, 2025, 12:17 AM
Spacecraft separation.
Source - Oct 26, 2025, 12:12 AM
Official Webcast by JAXA | 宇宙航空研究開発機構 has started
Source - Oct 26, 2025, 12:00 AM
Liftoff.
Source - Oct 25, 2025, 11:44 PM
Official Webcast by JAXA | 宇宙航空研究開発機構 has started
Source - Oct 24, 2025, 5:42 AM
Tweaked T-0.
Source - Oct 23, 2025, 5:21 AM
Rescheduled for October 26.
Source - Oct 19, 2025, 5:06 AM
Launch delayed due to launch site weather, new date TBD.
Source - Oct 16, 2025, 5:48 PM
Tweaked T-0.
Source - Oct 14, 2025, 1:36 PM
Tweaked T-0
Source - Oct 7, 2025, 12:13 AM
Tweaked T-0.
Source - Aug 22, 2025, 5:19 AM
GO for launch.
Source - Mar 12, 2025, 4:24 PM
NET October.
Source - Oct 25, 2024, 6:31 AM
NET September 2025.
Source - Jan 9, 2024, 2:30 PM
Tweaked approximate launch date per launch manifest (P.129 of source).
Source - Oct 27, 2022, 1:47 AM
NET January 2024
Source
Mitsubishi Heavy Industries
Mitsubishi Heavy Industries, Ltd. is a Japanese multinational engineering, electrical equipment and electronics company headquartered in Tokyo, Japan. MHI is one of the core companies of the Mitsubishi Group. MHI's products include aerospace components, air conditioners, aircraft, automotive components, forklift trucks, hydraulic equipment, machine tools, missiles, power generation equipment, printing machines, ships and space launch vehicles. Through its defense-related activities, it is the world's 23rd-largest defense contractor measured by 2011 defense revenues and the largest based in Japan.
Founded
1884
Administrator
President: Seiji Izumisawa
Total Launches
56
Successful
54
Failed
2
Pending
9
Consecutive Success
0
Tanegashima Space Center, Japan
The Tanegashima Space Center is the largest rocket-launch complex in Japan. It is located on the southeastern tip of Tanegashima, an island located south of Kyushu, an island and region and Japan. It was established in 1969 when the National Space Development Agency of Japan (NASDA) was formed, and is now run by JAXA. The activities that take place at TNSC include assembly, testing, launching, and tracking satellites, as well as rocket engine firing tests.
Timezone
Asia/Tokyo
Local Launch Time
Oct 26, 2025, 9:00 AM
Total Launches
97
Total Landings
0
Coordinates
30.4000, 130.9700