H-II Transfer Vehicle “KOUNOTORI9” (HTV9)departure from the ISS and re-entry to the atmosphere

Schedules of departure from the International Space Station (ISS) and re-entry to the atmosphere of the H-II Transfer Vehicle “KOUNOTORI9” (HTV9) are determined as follows.

Image credit: NASA

Departure from the ISS:August 19, 2020 / 2:35 a.m. (Japanese Standard Time, JST)

Re-entry to the atmosphere:August 20, 2020 / 4:07 p.m. (JST)


The time may vary according to the actual operation.


HTV9 Mission

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.


HTV9 Payload

HTV9 delivers a total of 6.2 metric tons (in the Pressurized Logistics Carrier (PLC) 4.3 metric tons and in the Unpressurized Logistics Carrier (ULC) 1.9 metric tons) supplies to the ISS.


Cargo in the pressurized Logistic Carrier (PLC)

Utilization/experiment related items

  • Solid Combustion Experiment Module (SCEM)

  • integrated Standard Imager for Microsatellites (iSIM) to be loaded on CubeSat (for private purposes)

  • Materials related to space media business (for private purposes)

  • A live imaging system "Confocal Space Microscopy" ("COSMIC")

  • "Space Avatar" business (for private purposes)

Cargo for the ISS crew

  • Fresh food

Cargo on the Unpressurized Logistics Carrier (ULC)

  • ISS battery Orbital Replacement Units (ORUs)


Source: JAXA