Space BD Realizes Japan's First Private Rideshare Launch Service on Flagship Rocket, to be Deployed on H3 Rocket Flight 6 (Flight Model 30)

Space BD Inc. (Headquarters: Chuo-ku, Tokyo; President and CEO: Masatoshi Nagasaki; hereinafter "Space BD"), a comprehensive space services company, announces that it has handled the launch integration support for all six payloads to be onboard the "H3 Rocket Flight 6 (Flight Model 30)", scheduled for launch in June 2026.

Of these, four units are provided by our company as a rideshare slot under the "H3 Rocket Rideshare Launch Service" based on a basic agreement*1 with the Japan Aerospace Exploration Agency (hereinafter "JAXA"). This is the first such case for a flagship rocket in Japan.

At the same time, our company also provided onboard integration support for the two ultra-small satellites of JAXA's "Innovative Satellite Technology Demonstration-3" to be launched concurrently.

*1 Selected by JAXA as the only private service provider in the business of providing rideshare ultra-small satellite launch opportunities using Japan's flagship H-IIA/H3 rockets (released December 4, 2019).

Mission logos of each organization/payload scheduled to be designed on the Flight Model 30 fairing
Top: "Innovative Satellite Technology Demonstration-3" logo (Provided by JAXA), Bottom: Logos of organizations/payloads provided with rideshare slots by Space BD

◾️4 payloads scheduled to be launched by H3 Rocket Rideshare Launch Service

Developer Organization
Payload (Satellite) Name
Overview

National University Corporation Kyushu Institute of Technology (Representative),
JAXA, Tokyo City University,
Kwansei Gakuin University,
Kanazawa University, Institute of Science Tokyo,
University of Fukui, Cosina Co., Ltd.,
Seiren Co., Ltd.

VERTECS
A 6U-size satellite observing the cosmic background radiation in visible light. Developed under the "Public-Private Transport and Ultra-small Satellite Mission Expansion Program (JAXA-SMASH)*2" implemented by JAXA. Our company was selected as the transport service provider for the first round of the program to support the launch.

BULL Co., Ltd.

HORN-L
HORN-R
Satellites for in-orbit demonstration of the "PMD (Post Mission Disposal) device" necessary for reducing space debris. Selected for the Ministry of Education, Culture, Sports, Science and Technology's FY2022 supplementary budget "Small and Medium Enterprise Innovation Creation Promotion Project (Phase 3)".

Unseenlabs SAS
(France)

BRO-22
One satellite configuring a satellite constellation specialized in radio detection for maritime vessel monitoring.

*2 Currently reorganized into the "JAXA Space Technology Demonstration Acceleration Program (JAXA-STEPS)"

Reference: Initiatives with each organization
National University Corporation Kyushu Institute of Technology "VERTECS" and JAXA-SMASH: https://www.space-bd.com/ja/news/news20241011-001.html
BULL Co., Ltd.: https://www.space-bd.com/ja/news/news20241021-001.html
Unseenlabs SAS: https://www.space-bd.com/ja/news/news20260401-001.html

◾️New Technical Infrastructure Enabling Multiple Payload Deployments

To realize the mounting and deployment of these diverse payloads, we will introduce an "Interface Plate" to deploy multiple payloads from a single mounting port—a first for a Japanese flagship rocket—and a "Sequencer" to distribute deployment signals. These were developed and implemented with the cooperation of Chuo Engineering Co., Ltd. and Innovative Solutions In Space (ISISpace) of the Netherlands.

"Interface Plate" for deploying multiple payloads from a single mounting port
Development Cooperation: Chuo Engineering Co., Ltd.

Chuo Engineering is an engineering company responsible for structural design, analysis, manufacturing, and test support in the spacecraft, rocket, and defense fields. They handled the detailed design, manufacturing, environmental testing, as well as assembly and handover support at the launch site for the interface plate.

■ About Space BD Inc.

Space BD is a "space trading company®" aiming to develop Japan's space business into a world-leading industry. Since our founding in 2017, alongside providing abundant means of transportation to space, we offer one-stop support for the utilization of outer space, including the International Space Station (ISS), from business plan consideration to technical operational support by our engineering department. Based on our sales and business development capabilities grounded in technical expertise, members with diverse career backgrounds are expanding businesses into public and private commercialization support, business transformation, and education fields using space.

As of January 2026, in addition to handling over 100 satellites, 62...