Japan Aerospace Exploration Agency

Flight record

Counts are launches filed under JAXA’s own name in The Space Devs’ Launch Library register. They are not a count of missions or payloads: a spacecraft that flew on a contracted vehicle is credited to the operator that flew it.

Who flies for them, and who they fly for

An operator owns the rocket and runs the count, and it is the operator’s name the launch schedule filters by. A customer funds the mission, supplies the payload and buys the ride. Plenty of organisations are both. JAXA is counted below in whichever role the current manifest actually gives it.

No scheduled flight in the current window names JAXA while being operated by somebody else.

How this is counted: a scheduled launch is treated as a customer flight when this organisation’s name or abbreviation appears in the launch name, mission name or programme and somebody else is flying it. Mission descriptions are not searched, and the window is one batch of the next launches worldwide, reaching to 2026-12-31 00:00:00Z — so both counts are a floor, not a complete manifest.

About JAXA

The Japan Aerospace Exploration Agency (JAXA) is Japan's national aero-space agency. Through the merger of three previously independent organizations, JAXA was formed on 1 October 2003. JAXA is responsible for research, technology development and the launch of satellites into orbit, and is involved in many more advanced missions, such as asteroid exploration and possible manned exploration of the Moon. JAXA launch their Epsilon vehicle from the Uchinoura Space Center and their H-II vehicles from the Tanegashima Space Center.

Upcoming launches

“T-0 known to” is the register’s own precision on the launch time — a date good only to the month is shown as such rather than counted down as if it were exact. A go-probability appears only where the operator published one for that flight; Delta-V does not calculate it and it is not a forecast made here.

Common questions

How many launches has Japan Aerospace Exploration Agency flown?

Japan Aerospace Exploration Agency has 37 launches on record under its own name, of which 33 succeeded and 4 failed. The register counts launches flown under an operator's own name, not missions or payloads it contributed to.

What is Japan Aerospace Exploration Agency's success rate?

Japan Aerospace Exploration Agency has a lifetime launch success rate of 89.2%, calculated as 33 successful flights out of 37 attempts. Its current run is 2 consecutive successes.

When is Japan Aerospace Exploration Agency's next launch?

Japan Aerospace Exploration Agency is not flying anything inside Delta-V's current manifest window, which reaches to 2026-12-31 00:00:00Z. The register lists 2 scheduled launches under its own name, with dates further out or not yet filed.

Does Japan Aerospace Exploration Agency fly its own rockets, or buy launches from another operator?

Japan Aerospace Exploration Agency has 37 launches flown under its own name in the launch register. It is not the operator on any flight in the current manifest window. An operator owns the rocket and runs the count; a customer funds the mission, supplies the payload and buys the ride. The operator filter on the launch schedule lists only the former, which is why a well-known agency can be central to a flight and still not appear on it.

Where is Japan Aerospace Exploration Agency based?

Japan Aerospace Exploration Agency is based in Japan and the register classifies it as a government operator. It was founded in 2003.