Spaceport Kii (sometimes stylized as Space Port Kii) is a commercial spaceport located in Kushimoto, Wakayama Prefecture in Japan. Japan's first private spaceport, it is operated by Space One, who are using it to launch their solid-fuel rocket KAIROS. As of 26 March 2024, only one launch attempt has been made on the site on 13 March, which ended up being a failure.^[1][2]

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Quick Facts Location, Coordinates ...

Spaceport Kii

Location	Kushimoto, Wakayama Prefecture, Japan
Coordinates	33.5443°N 135.8895°E / 33.5443; 135.8895
Time zone	UTC+9 (JST)
Operator	Space One
Total launches	1
Launch pad(s)	1
Launch history Status Active Launches 1 First launch 13 March 2024[1] Associated rockets KAIROS

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Spaceport Kii's location is located near the southernmost tip of Honshu and is only a two-minute (1.9 kilometer) drive from Kii-Uragami Station in Nachikatsuura.

The launch site was funded by several Japanese corporations, including Canon Inc., Shimizu Corporation (who also constructed the site),^[3] and IHI Corporation.^[4] Ground broke on 19 November 2019.^[3]

The first launch attempt of the KAIROS rocket was scheduled on 8 March 2024,^[5] however it was delayed to the 13th due to a ship in too close of proximity.^[6] It launched on the 13th, but disintegrated just seconds later.^[1]

Space One has stated that it plans to have around 20 launches of KAIROS a year.^[3][2]