# HTV-X1 > cargo resupply spacecraft for the International Space Station **Wikidata**: [Q106041061](https://www.wikidata.org/wiki/Q106041061) **Wikipedia**: [English](https://en.wikipedia.org/wiki/HTV-X1) **Source**: https://4ort.xyz/entity/htv-x1 ## Summary HTV-X1 is a Japanese automated cargo spacecraft developed to resupply the International Space Station (ISS). Launched on October 26, 2025, it serves as the first flight unit of the HTV-X class operated by the Japan Aerospace Exploration Agency (JAXA). The spacecraft successfully berthed with the ISS Harmony module's nadir port on October 30, 2025. ## Key Facts * **Classification:** Instance of the HTV-X class of Japanese automated cargo spacecraft. * **Launch Date:** October 26, 2025, at 00:00:15. * **Launch Vehicle:** H3 Launch Vehicle (specific flight H3-F7). * **Launch Site:** Yoshinobu Launch Complex Launch Pad 2. * **Operator:** Japan Aerospace Exploration Agency (JAXA). * **Manufacturer:** Mitsubishi Heavy Industries (Prime Contractor); Mitsubishi Electric (Service Module). * **Orbit:** Low Earth Orbit. * **Berthing Date:** October 30, 2025, at 11:10. * **Berthing Location:** International Space Station (Harmony module, nadir port). * **Scheduled Unberthing:** March 5, 2026, at 20:26. * **Power System:** Equipped with 2 spacecraft solar arrays generating 3000 watts. * **COSPAR ID:** 2025-241A. ## FAQs ### Q: What is the purpose of the HTV-X1 spacecraft? A: HTV-X1 is a cargo resupply spacecraft designed to deliver equipment and supplies to the International Space Station. It is the first operational flight of the new HTV-X class developed by Japan. ### Q: When did HTV-X1 launch and arrive at the Space Station? A: The spacecraft launched on October 26, 2025, aboard an H3 rocket. It arrived and berthed at the International Space Station's Harmony module on October 30, 2025. ### Q: Who built and operates HTV-X1? A: The spacecraft is operated by the Japan Aerospace Exploration Agency (JAXA). It was manufactured primarily by Mitsubishi Heavy Industries as the prime contractor, with Mitsubishi Electric responsible for the service module. ### Q: How long is HTV-X1 scheduled to stay at the ISS? A: According to mission data, HTV-X1 is scheduled to unberth and depart the International Space Station on March 5, 2026. ## Why It Matters HTV-X1 represents a critical evolution in Japan's space logistics capabilities, serving as the debut mission for the HTV-X class of spacecraft. As the successor to the previous HTV (H-II Transfer Vehicle) series, HTV-X1 demonstrates Japan's continued commitment to supporting the International Space Station's operational lifespan. The successful deployment of this spacecraft validates the new design and systems intended to provide more efficient and reliable cargo delivery to low Earth orbit. Furthermore, the mission highlights the capabilities of the Japanese aerospace industry, specifically Mitsubishi Heavy Industries and Mitsubishi Electric, in developing advanced space technologies. The launch also utilized the H3 Launch Vehicle, marking a significant integration of Japan's domestic launch and spaceflight infrastructure. By facilitating the transport of essential cargo, HTV-X1 plays a vital role in sustaining human presence and scientific research aboard the orbiting laboratory. ## Notable For * **First of Class:** Being the first flight unit (instance) of the new HTV-X spacecraft line. * **H3 Integration:** Launching atop the H3 Launch Vehicle (flight H3-F7), Japan's modern expendable launch system. * **Extended Mission:** A mission duration spanning from late October 2025 to early March 2026, supporting long-term ISS operations. * **Power Capacity:** Featuring a robust power system with two solar arrays capable of generating 3,000 watts. * **Capture Imagery:** Being captured in a notable image by the Canadarm2 during its approach to the ISS. ## Body ### Development and Manufacturing HTV-X1 was developed as a cargo resupply spacecraft specifically for the International Space Station. The project was overseen by the Japan Aerospace Exploration Agency (JAXA), with Japan as the country of origin. The manufacturing was a collaborative effort led by Mitsubishi Heavy Industries, which served as the prime contractor. Mitsubishi Electric contributed significantly by manufacturing the service module for the spacecraft. ### Launch and Deployment The spacecraft was launched on October 26, 2025, precisely at 00:00:15. The launch took place at the Yoshinobu Launch Complex Launch Pad 2. HTV-X1 was carried into low Earth orbit by the H3 Launch Vehicle, identified specifically as the H3-F7 flight. ### ISS Operations Following its launch, HTV-X1 executed a rendezvous with the International Space Station. It successfully berthed with the station on October 30, 2025, at 11:10. The spacecraft attached to the nadir port of the Harmony module (Node 2). During its stay, it functioned as a satellite of the space station in low Earth orbit. The spacecraft is scheduled to conclude its mission with an unberthing on March 5, 2026, at 20:26. A notable image from the mission, taken on October 29, 2025 (UTC), shows the new HTV-X1 in the grips of the Canadarm2, documenting its arrival and capture. ### Technical Specifications HTV-X1 is equipped with a power system consisting of two spacecraft solar arrays. These arrays are rated to produce a power output of 3,000 watts (unit Q25236). The spacecraft is registered under the COSPAR ID 2025-241A and the satellite catalog number (SCN) 66174. ## References 1. [Source](https://space.skyrocket.de/doc_sdat/htv-x.htm) 2. [Source](https://www.mhi.com/technology/review/sites/g/files/jwhtju2326/files/tr/pdf/e584/e584060.pdf) 3. [Source](https://www.mext.go.jp/kaigisiryo/content/20210209-mxt_uchukai01-000012703_10.pdf) 4. Jonathan's Space Report 5. [Source](https://humans-in-space.jaxa.jp/en/htv-x/specifications/) 6. [Source](https://global.jaxa.jp/press/2025/10/20251030-1_e.html) 7. [Source](https://www.collectspace.com/news/news-102925a-jaxa-htv-x1-space-station-arrival.html) 8. [Source](https://www.nasa.gov/blogs/spacestation/2026/03/05/canadarm2-grips-cargo-spacecraft-spacewalk-prep-and-biology-continue/)