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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.


HTV8 Payload (October 11, 2019)

HTV8 payload web page.

The Exposed Pallet (EP) of the HTV8 was reinstalled into KOUNOTORI's Unpressurized Logistics Carrier (ULC). (October 1, 2019)

The Exposed Pallet (EP) of KOUNOTORI6 was reinstalled into KOUNOTORI8 Unpressurized Logistics Carrier (ULC) at 11:12 p.m., September 30.

KOUNOTORI8 Hatch Opening and Crew Ingress (September 29, 2019)

The ISS crew opened the hatch of KOUNOTORI8 at 4:10 a.m., September 29 and entered the Pressurized Logistics Carrier (PLC) at 4:14 a.m., September 29.

» HTV8 Mission News

HTV8 Mission Schedule (as of September 29, 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
  • *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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