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H-II Transfer Vehicle KOUNOTORI (HTV)

HTV5 mission logo

HTV5 mission logo

HTV5 Mission

Developed and built in Japan, the H-II Transfer Vehicle (HTV) known as "KOUNOTORI (white stork)" is an unmanned cargo transfer spacecraft that delivers supplies to the International Space Station (ISS).

Japan, the U.S., and Russia currently operate cargo transfers to the ISS. Among the supply vehicles, KOUNOTORI serves as the backbone of ISS operations with its world-leading supply capacity of approx. 6 metric tons, and is the only space liner capable of delivering large items of hardware.

Given its consistent on-time arrivals ever since the launch of the first technology demonstration mission, KOUNOTORI is widely acknowledged to be a safe and reliable vehicle, for which the world has high expectations regarding its operations.

Detailed pages:

Features of the HTV5
HTV5 payload
HTV5 mission timeline


KOUNOTORI5 Mission Completed

KOUNOTORI5 Mission Completed (September 30, 2015)

KOUNOTORI5 (HTV5) reentered Earth's atmosphere at 5:33 a.m., September 30 (8:33 p.m., September 29 UTC).


KOUNOTORI5 Leaves the ISS (September 29, 2015)

KOUNOTORI5 (HTV5) was unberthed from the nadir port of Harmony (node 2) by the Space Station Remote Manipulator System (SSRMS) at 8:12 p.m., September 28 (11:12 a.m., September 28 UTC).

The hatch of KOUNOTORI5 was closed

The hatch of KOUNOTORI5 was closed (September 28, 2015)

The KOUNOTORI5's hatch closure was confirmed at around 0:29 a.m., September 28 (3:29 p.m., September 27 UTC).

» HTV5 Mission News

Flight Schedule

HTV5 Mission Schedule (as of September 30, 2015)
All times are Japan Standard Time (UTC + 9 hours)
Item Description
Launch date and time 8:50:49 p.m., August 19, 2015
Launch window Aug. 17 (Mon.) - Sept. 30 (Wed.), 2015
Launch site Yoshinobu Launch Complex, Tanegashima Space Center (TNSC)
HTV5 capture 7:29 p.m., August 24, 2015
Berthing completion to the ISS (Activation of the HTV DDCU) 2:28 a.m., August 25, 2015
Departure from the ISS 1:53 a.m., September 29, 2015
5:33a.m., September 30, 2015
Altitude Insertion Orbit: 200 km x 300 km (elliptical orbit)
Rendezvous: Approx. 400km
Inclination 51.7 degrees

All photo credits in the HTV webpages are JAXA unless otherwise noted.

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