PADYoshinobu Launch Complex LP-2
SITETanegashima Space Center, Japan →ORBITLow Earth Orbit
TYPEResupply
PROGRAMInternational Space Station
MISSION OVERVIEW
Uncrewed cargo resupply mission to International Space Station delayed from June 2012.
LAUNCH DETAILS
VEHICLE
H-IIBMISSION
Kounotori 4 (HTV-4)
MISSION TYPE
Resupply
TARGET ORBIT
Low Earth Orbit
LAUNCH PAD
Yoshinobu Launch Complex LP-2LAUNCH SITE
Tanegashima Space Center, JapanPROGRAM
International Space Station
COUNTRY
JPN
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: 837376b3-ad4b-47cf-91be-dd3d1b1dfdfc
Reported date: Aug 3, 2013 at 19:48 UTC
Last synced: 11 hours ago
This launch date and time are confirmed by the launch provider. Countdown is active.
LAUNCH MAP
PAD WEATHER
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H-II TRANSFER VEHICLE (HTV) — KOUNOTORI 4
HTV-4SERIAL
1FLIGHTS
International Space StationDESTINATION
Single UseSTATUS
Kounotori 4, also known as HTV-4, was the fourth flight of the H-II Transfer Vehicle, an unmanned cargo spacecraft launched in August 2013 to resupply the International Space Station. It…
VEHICLE — H-IIB →
MANUFACTURER
Mitsubishi Heavy Industries
VARIANT
304
FLIGHTS
9
SUCCESSES
9
SUCCESS RATE
100%
H-IIB (H2B) is an expendable launch system used to launch H-II Transfer Vehicles (HTV, or Kounotori) towards the International Space Station. H-IIB rockets are liquid-fuelled with solid-fuel strap-on boosters and are launched from the Tanegashima Space Center in Japan. Mitsubishi and JAXA have been primarily responsible for design, manufacture, and operation of H-IIB.
FREQUENTLY ASKED QUESTIONS
When is the H-IIB 304 | Kounotori 4 (HTV-4) launch?
The H-IIB 304 | Kounotori 4 (HTV-4) is scheduled for Saturday, August 3, 2013 at 7:48 PM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for Kounotori 4 (HTV-4)?
The H-IIB 304 | Kounotori 4 (HTV-4) mission uses the H-IIB rocket, manufactured by Mitsubishi Heavy Industries. The H-IIB has flown 9 times with a 100% success rate.
Where is the H-IIB 304 | Kounotori 4 (HTV-4) launching from?
The launch takes place from Yoshinobu Launch Complex LP-2 at Tanegashima Space Center, Japan.
What orbit is Kounotori 4 (HTV-4) going to?
The Kounotori 4 (HTV-4) mission is targeting Low Earth Orbit.
Who is launching Kounotori 4 (HTV-4)?
The H-IIB 304 | Kounotori 4 (HTV-4) is operated by Mitsubishi Heavy Industries. It is part of the International Space Station program.
Can I watch the H-IIB 304 | Kounotori 4 (HTV-4) launch live?
Yes. Visit the launch detail page on Space Launch Live for embedded YouTube webcasts, replay videos, and links to live coverage from SpaceX, NASA, NASASpaceflight, and other channels.
LAUNCH TIMELINE
Mar 29, 2026 00:03 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 29, 2026 00:03 UTC
Launch date set: Aug 3, 2013 at 19:48 UTC
NET (No Earlier Than) confirmed by Mitsubishi Heavy Industries
Mar 29, 2026 00:03 UTC
Launch completed successfully
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 11 hours ago
●Launch Library 211 hours ago
Launch ID: 837376b3-ad4b-47cf-91be-dd3d1b1dfdfc
●Open-Meteo Weather11 hours ago
Pad weather at 30.4, 130.98
●YouTube Video Search11 hours ago
1 video discovered
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