Family-level launch record combining canonical variants, historical missions, public cadence forecasts, and available payload performance specs.
Historical missions are grouped by actual launch year. Forecast cadence uses family-level launch-rate rows.
| Year | Historical missions | Forecast launches |
|---|---|---|
| 2024 | 2 | 0 |
| 2026 | 1 | 1 |
| 2027 | 0 | 1 |
| 2028 | 0 | 1 |
| 2029 | 0 | 1 |
| 2030 | 0 | 1 |
| 2031 | 0 | 1 |
| 2032 | 0 | 1 |
| 2033 | 0 | 1 |
| 2034 | 0 | 1 |
| 2035 | 0 | 1 |
| 2036 | 0 | 1 |
| 2037 | 0 | 1 |
| 2038 | 0 | 1 |
| 2039 | 0 | 1 |
| 2040 | 0 | 1 |
| 2041 | 0 | 1 |
Payload capacity by variant and target orbit when structured capacity rows are available.
| Variant | Orbit | Capacity | Altitude | Inclination | Source |
|---|---|---|---|---|---|
Kairos | SSO | 150 kg | 500 km | Unknown | Space One official KAIROS service page |
Latest launched missions using variants in this family.
| Mission | Variant | Launch |
|---|---|---|
| Launch 2026-F04 | Kairos | Mar 5, 2026 |
| Launch 2024-F04 | Kairos | Dec 18, 2024 |
| Launch 2024-F01 | Kairos | Mar 13, 2024 |
Upcoming mission rows with announced launch timing.
| Mission | Variant | Announced |
|---|
Canonical variants rolled up into this launch vehicle family.
| Variant | Stages | Missions | Status |
|---|---|---|---|
Kairos | Not stated | 3 | Active |
1 launch location represented.
| Year | Location | Launches | Confidence | Basis |
|---|---|---|---|---|
| 2026 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
| 2027 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
| 2028 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
| 2029 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
| 2030 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
| 2031 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
| 2032 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
| 2033 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
| 2034 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
| 2035 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
| 2036 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
| 2037 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
| 2038 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
| 2039 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
| 2040 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
| 2041 | Spaceport Kii | 1 | 25% | Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot. |
Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot.
Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot.
Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot.
Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot.
Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot.
Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot.
No forecasted missionsNo upcoming announced mission rows are linked to this vehicle family. |
Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot.
Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot.
Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot.
Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot.
Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot.
Catalog-completeness placeholder for active KAIROS family; not used by latest forecast capacity snapshot.
Kairos No.3 is scheduled to carry the approximately 70 kg microsatellite TATARA-1R built by TerraSpace of Kyotanabe, Kyoto as a payload.
Kairos No.3 is scheduled to carry the student-developed satellite Hiroo Engineering for Orbit (HErO) built by students of Hiroo Gakuen in Minato, Tokyo as a payload.
SpaceOne originally scheduled the Kairos No.3 launch for February 25.
The Kairos rocket is a three-stage solid-fuel rocket with a liquid-propulsion kick stage called PBS to improve orbital insertion accuracy.
Kairos can deliver approximately 250 kg to low Earth orbit (LEO) and approximately 150 kg to sun-synchronous orbit (SSO).
Kairos No.3 is scheduled to carry the 3U cubesat SC-Sat1a built by Space Cubics of Sapporo as a payload.
Kairos No.3 is scheduled to carry the 3U cubesat AETS-1 built by ArcEdge Space of Koto, Tokyo as a payload.
The Kairos rocket is about 18 meters tall and has a gross mass of about 23 tons.
SpaceOne based its decision to postpone the Kairos No.3 launch on a weather analysis.
SpaceOne postponed the launch of its Kairos No.3 rocket and will not conduct the launch in February.
Kairos No.2 launched in December 2024 reached an altitude of 110 km but mission completion was deemed difficult and the flight was aborted.
SpaceOne will notify the new Kairos No.3 launch date at least two days before the launch.
Space One will provide the new KAIROS Rocket 3 launch date at least two days before the launch.
Launch site weather forecasts slipped KAIROS Flight 3 into some day in March.
Space One (スペースワン株式会社) postponed the KAIROS Rocket 3 launch that had been scheduled for February 25.
Space One decided that KAIROS Rocket 3 will not be launched during February.
Space One Corporation is conducting crowdfunding to support the launch of the Kairos Rocket No. 3.
The launch of the Kairos Rocket No. 3 will take place at 11:00 AM Japan Standard Time, with a backup window extending from February 26 to March 25, 2026.
Space One experienced consecutive launch failures with the first two units of the Kairos Rocket in 2024.
Space One plans to launch the Kairos Rocket No. 3 with five ultra-small satellites on February 25, 2026.