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JAXA — Japan Aerospace Exploration Agency

Japan's precision-engineering space agency — pioneering asteroid sample return, lunar landing, active debris removal and the H3 next-generation launcher.

JAXA stands for the Japan Aerospace Exploration Agency — Japan's national space agency, formed in 2003 by merging three predecessor organisations. It is renowned for precision engineering: the Hayabusa asteroid sample-return missions, the SLIM pinpoint Moon landing and the H3 launch vehicle.

Profile figures verified September 2026 · fleet and crew counts on this page update automatically from live tracking data.

Live Trackers

Overview

🇯🇵
Japan
$3.2B
Budget (2025)
2003
Founded
Active Satellites

JAXA was formed in 2003 by merging three predecessor organisations (NASDA, ISAS, NAL). Japan's space programme is characterised by exceptional precision engineering and world-first scientific achievements — particularly in asteroid exploration. The Hayabusa missions returned samples from two asteroids, making Japan the only country to have accomplished asteroid sample return (twice).

JAXA operates the QZSS regional navigation system, contributes the Kibo laboratory module to the ISS, and has developed the H-IIA/H-IIB and new H3 launch vehicles. Japan is also a pioneer in active debris removal through the ADRAS-J mission and commercial partnerships, positioning itself at the forefront of space sustainability.

Quick Facts

ParameterDetail
Full NameJapan Aerospace Exploration Agency
AbbreviationJAXA
CountryJapan
HeadquartersChōfu, Tokyo, Japan
Founded2003
HeadHiroshi Yamakawa (President)
Budget~$3.2B (2025)
Staff~1,500
Crewed CapabilityNo (astronauts fly on partner vehicles)
Websitewww.jaxa.jp

Key Programmes

Hayabusa Asteroid Missions

Hayabusa (2003) and Hayabusa2 (2014) returned samples from asteroids Itokawa and Ryugu. Hayabusa2's sample capsule landed in Australia in December 2020 with pristine carbonaceous material from the early solar system.

SLIM Lunar Lander

Smart Lander for Investigating Moon — achieved Japan's first successful lunar landing in January 2024, demonstrating precision landing within 100 metres of its target.

H3 Launch Vehicle

Japan's next-generation launcher, replacing H-IIA. Designed for lower cost and higher reliability. Successfully flew its second mission in 2024 after a first-flight failure.

ADRAS-J Debris Removal

Astroscale's ADRAS-J, supported by JAXA, successfully demonstrated close-proximity approach to a piece of space debris in orbit — a world-first in active debris removal technology.

QZSS Navigation

Quasi-Zenith Satellite System — a regional augmentation system enhancing GPS accuracy over Japan and Asia-Pacific to centimetre-level precision.

ISS Kibo Module

Japan's Kibo laboratory is the largest pressurised module on the ISS. JAXA also operates the HTV-X cargo vehicle for ISS resupply.

Launch Infrastructure

JAXA launches from:

SpaceportRole
Tanegashima Space CenterJapan's primary orbital launch site — H3 and H-IIA rockets

Launch Vehicles

VehicleRole
H3Next-generation launcher
Epsilon SSmall solid-fuel rocket

Timeline

1970
Ohsumi — Japan's first satellite, making Japan the 4th spacefaring nation
2003
JAXA formed from merger of NASDA, ISAS and NAL; Hayabusa launched
2010
Hayabusa returns asteroid Itokawa samples — world first
2014
Hayabusa2 launched toward asteroid Ryugu
2020
Hayabusa2 returns Ryugu samples to Earth
2024
SLIM achieves Japan's first lunar landing; H3 second flight succeeds
💡 Did You Know?
Hayabusa2's sample capsule, containing material from asteroid Ryugu, entered Earth's atmosphere at 12 km/s (43,000 km/h) and landed within 100 metres of its target in the Australian outback — after a 5.24 billion km round trip.
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JAXA fleet — live snapshot

Satellites operated by Japan Aerospace Exploration Agency that are currently tracked in orbit, counted live from the catalogue and attributed by mission/programme — including veteran spacecraft still on orbit. Commercial constellations of the same nation are excluded — these are JAXA's own spacecraft. Figures update automatically.

18
Agency-operated satellites
live from the tracked catalogue
1
QZSS (Michibiki)
operational, counted live
$3.2B
Annual budget
2025 fiscal year
#7
Rank by tracked fleet
of 14 flagship agencies
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JAXA at a glance

💰$3.2BAnnual budget · 2025
📅2003Founded
🏢TokyoHeadquarters
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JAXA fleet by orbit

18 operated
  • LEO 8 44%
  • GEO 10 56%
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JAXA head-to-head

How JAXA compares with the agencies it is most often measured against. Fleet figures are counted live from the tracked catalogue.

JAXA vs ISRO

🇯🇵 JAXA🇮🇳 ISRO
Tracked fleet (live)1874
Annual budget$3.2B (2025)$1.9B (2025)
Founded20031969
Crewed spaceflightNo (partner vehicles)No (partner vehicles)
Flagship programmeQZSS (Michibiki)NavIC navigation
HeadquartersTokyoBengaluru
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JAXA vs other space agencies

Agency Country Tracked fleet Flagship Budget Founded
🇨🇳 CNSA China 254 BeiDou navigation $14B 1993
🇷🇺 Roscosmos Russia 235 GLONASS navigation $3.6B 1992
🇮🇳 ISRO India 74 NavIC navigation $1.9B 1969
🇪🇺 ESA Europe (23 states) 55 Galileo navigation €7.8B 1975
🇮🇹 ASI Italy 39 COSMO-SkyMed €1.5B 1988
🇺🇸 NASA United States 37 $25.4B 1958
🇯🇵 JAXA you are here Japan 18 QZSS (Michibiki) $3.2B 2003
🇰🇷 KASA South Korea 14 KOMPSAT (Arirang) $0.7B 2024
🇧🇷 AEB Brazil 9 $0.12B 1994
🇫🇷 CNES France 7 €3.3B 1961
🇵🇰 SUPARCO Pakistan 7 $0.045B 1961
🇨🇦 CSA Canada 5 RADARSAT C$0.43B 1989
🇬🇧 UKSA United Kingdom 4 £0.83B 2010
🇩🇪 DLR Germany 2 €2.6B 1969

Tap a column to sort · "≈" marks an approximate fleet pending live catalogue confirmation · counts are agency-operated spacecraft tracked in orbit (veteran satellites included, commercial constellations excluded) · figures verified September 2026, updated daily.

JAXA — frequently asked questions

What does JAXA stand for?

JAXA stands for the Japan Aerospace Exploration Agency (宇宙航空研究開発機構), Japan's national space agency. It was formed on 1 October 2003 by merging ISAS, NAL and NASDA, and is headquartered in Tokyo with its main launch site at Tanegashima.

What is JAXA famous for?

JAXA is best known for the Hayabusa and Hayabusa2 missions — the first to return samples from asteroids — the SLIM lander's 2024 pinpoint lunar touchdown, the Kibo module on the International Space Station, and the QZSS 'Michibiki' navigation satellites that sharpen GPS over Japan.

Does JAXA have astronauts?

Yes. JAXA maintains an astronaut corps that flies to the International Space Station on partner spacecraft, and Japanese astronauts are assigned to NASA's Artemis lunar programme — including future seats on lunar surface missions.

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Explore JAXA on Orbital Radar

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