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H-II Transfer Vehicle KOUNOTORI (HTV)

HTV8 Mission

HTV8 mission logo

Developed and built in Japan, the H-II Transfer Vehicle (HTV) known as "KOUNOTORI (meaning 'white stork' in Japanese)" is an unmanned cargo transfer spacecraft that delivers supplies to the International Space Station (ISS).
"KOUNOTORI" provides very basic support for ISS operations by delivering up to six tons of cargo and has the world's largest transportation capacity. It also has the unique function of carrying multiple numbers of large-size experimental instruments on one flight.


Reentry of KOUNOTORI8 was confirmed (November 3, 2019)

The reentry of the H-II Transfer Vehicle KOUNOTORI8 (HTV8) into Earth's atmosphere was confirmed.

KOUNOTORI8 performed final de-orbit maneuver for reentry (November 3, 2019)

KOUNOTORI8 performed three de-orbit maneuvers for reentry into Earth's atmosphere.

KOUNOTORI8 Leaves the ISS (November 2, 2019)

Captured by the SSRMS, KOUNOTORI8 was moved to the releasing point below the station and released into orbit at 2:20 a.m., November 2.

» HTV8 Mission News

HTV8 Mission Schedule (as of November 3, 2019)

Item Schedule*1
HTV flight name HTV8 (KOUNOTORI8) (The eighth HTV flight: HTV8)
Date of Launch September 25, 2019
Time of Launch 1:05:05 a.m.
HTV8 capture 8:13 p.m., September 28, 2019
Berthing completion to the ISS 2:55 a.m., September 29, 2019
Departure from the ISS 2:20 a.m., November 2, 2019
Reentry Around 11:09 a.m., November 3, 2019
  • *1 All times are Japan Standard Time (JST. UTC + 9 hours)

Major payload to be delivered on board HTV8

Major payload to be delivered on board HTV8 is as follows.

Cargo in the Pressurized Logistics Carrier (PLC)

  • Utilization/experiment-related items
    • Cell Biology Experiment Facility-Left (CBEF-L)
    • Small Optical Link for International Space Station (SOLISS)
    • Gravitational Dependence Research of Flexible Surface on a Planet (Hourglass)
    • JEM Small Satellite Orbital Deployer (J-SSOD) and Ultra-small Satellite (CubeSat)
  • Cargo for the ISS crew
    • Fresh Food
    • Crew Provisioning Items

Cargo in the Unpressurized Logistics Carrier (ULC)

  • ISS Li-ion battery Orbital Replacement Units (ORUs)

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