KAIROS

Name: KAIROS
Brand: Space One

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Payload LEO

250 kg

Payload SSO

150 kg

Assessment

LEO value is for 500 km at 33 degrees and SSO value is for 500 km at 97 degrees. All three flights so far, on 13 March 2024, 18 December 2024 and 5 March 2026, ended with flight termination before completing their missions.

Source (provider information)

Technical data

Height18 m

Diameter1.4 m

Liftoff mass23 t

Stages4

PropellantSolid (stages 1 to 3), liquid upper stage

First flight2024

Lead time–

Launch sites

Spaceport Kii

Price

Price on request

To the provider: Space One

News about KAIROS

Oct 12, 2026Japanese Launch Options: H3, KAIROS and ZERO Compared
Oct 06, 2026Satellite Launch Providers Compared: Who Can Launch Your Satellite in 2026?

Prices shown are the providers' official figures and are always non-binding – only the individual quote is binding.