Week in Space Data, every Friday.
Space One is developing the KAIROS small solid-fuel rocket for rapid-response orbital launch, backed by Canon Electronics and IHI Aerospace.
ACTIVESpace One is a Japanese launch company developing the KAIROS small solid-fuel rocket for rapid-response orbital launch services. Backed by Canon Electronics, IHI Aerospace, and other major Japanese corporations.
Space One was established as a joint venture between Canon Electronics, IHI Aerospace, Shimizu Corporation, and the Development Bank of Japan. The company is developing KAIROS, a four-stage solid-propellant rocket designed for rapid-turnaround launches of small satellites. Operating from the Kii Space Launch Center in Wakayama Prefecture, Space One aims to provide high-frequency, responsive launch services for the growing small satellite constellation market.
Not ranked: Data in 1 pillar; at least 2 are needed to rank.
2 of 5 inputs measured · Insufficient data · 31% of applicable weight backed by data
Not measured: Headcount, Reported revenue
Not measured: Open-role change (90 days)
A pillar score averages the company’s percentiles among the tracked companies with a value: relative standing, not a grade. Inputs measured 2026-10-13 (UTC) · methodology v6. Every input, its value and percentile · How it is computed
The Space Score ranks companies relative to each other on public data we hold. It describes; it does not rate, forecast or recommend. It is not a credit rating and not investment advice. Full disclaimer
Sources: Founded, Headquarters, CEO, Legal name
For information only, not investment advice. SpaceNexus is not a registered investment adviser, broker or dealer, and nothing here is a recommendation to buy, sell or hold any security. Data may be delayed, estimated or incomplete; check the source before acting. Full disclaimer
1 private round on record (1 with no stated amount, counted but not added). Debt, grants, state capital, owner funding and acquisitions are listed under Funding history by class and not added in.
Latest funding round
2024 round (third-party allotment) · –
Oct 9, 2024
Four-stage small satellite launcher (three solid stages and a liquid upper stage) launched from Spaceport Kii, Japan. All three flights so far (March 2024, December 2024, March 2026) failed.
Checking for a discussion…
Compiled Oct 14, 2026 from 3 public records. Every figure links the record it comes from.
Latest sourced round
2024 round (third-party allotment): amount undisclosed
Source: Space One (press release)
Announced Oct 9, 2024
Launches flown as provider
2 since Nov 18, 2024
2 failed. Latest: KAIROS | Flight 3
Our launch record starts Nov 18, 2024; earlier launches are not counted here. Every kind of launch in the feed counts, crewed, lunar and station missions included.
Source: Launch Library 2 launch record
Latest launch Mar 5, 2026
Nissay Capital (fund)
Took part in 2024 round (third-party allotment) (Oct 9, 2024)
Space One (press release), Oct 9, 2024
Took part in 2024 round (third-party allotment) (Oct 9, 2024)
Space One (press release), Oct 9, 2024
APA
SpaceNexus. (2026, October 14). Space One: Company dossier [Data set]. Retrieved October 14, 2026, from https://spacenexus.us/company-profiles/space-one
Chicago
SpaceNexus. "Space One: Company dossier." Data as of October 14, 2026. Accessed October 14, 2026. https://spacenexus.us/company-profiles/space-one.
BibTeX
@misc{spacenexus_spaceone_2026,
author = {{SpaceNexus}},
title = {{Space One}: Company dossier},
year = {2026},
month = oct,
howpublished = {\url{https://spacenexus.us/company-profiles/space-one}},
url = {https://spacenexus.us/company-profiles/space-one},
urldate = {2026-10-14},
note = {Data as of 2026-10-14; each fact links its primary source}
}