Sourced catalog
Mission directory
Search names and vehicles, then combine destination, agency, mission type, outcome, launch year, and trajectory filters. Your view stays in the URL.
308 records
Snapshot 2026-10-12
Filters1 active
Active filters: Institute of Space and Aeronautical Science, U of Tokyo
Open the explorerNot carried: Institute of Space and Aeronautical Science, U of Tokyo.
Launched 1998
Failed · FailureNozomi (Japanese for Hope and known before launch as Planet-B) was planned as a Mars orbiting aeronomy mission designed to study the martian upper atmosphere and its interaction with the solar wind and to develop technologies for use in future planetary missions. A malfunctioning valve during an Earth swingby resulted in a loss of fuel and left the spacecraft with insufficient acceleration to reach its planned trajectory, and solar flares later damaged its communications and power systems. Efforts to put the Nozomi spacecraft into martian orbit have been abandoned: an attempt to fire thrusters to orient the craft for a Mars orbit insertion burn failed on December 9, the smaller thrusters were successfully fired, and Nozomi flew past Mars at a distance of 1000 km on 14 December and went into a heliocentric orbit with a period of roughly two years.
- Agency
- Institute of Space and Aeronautical Science, U of Tokyo
- Destination
- Mars · Earth · Moon
- Trajectory
- Predicted trajectory
Launched 1990
Completed · SuccessA Japanese engineering mission that tested lunar swingbys and aerobraking, released the small Hagoromo spacecraft, and later entered lunar orbit. Hagoromo’s intended lunar orbit could not be confirmed after its transmitter failed.
- Agency
- Institute of Space and Aeronautical Science, U of Tokyo
- Destination
- Moon
- Trajectory
- Reconstructed trajectory
Launched 1985
Completed · SuccessSuisei was launched into heliocentric orbit to fly by Comet P/Halley and encountered it in 1986.
- Agency
- Institute of Space and Aeronautical Science, U of Tokyo
- Destination
- 1P/Halley
- Trajectory
- Estimated trajectory
Launched 1985
Lost · SuccessSakigake is a test spacecraft that flew by Comet P/Halley on its sunward side in 1986.
- Agency
- Institute of Space and Aeronautical Science, U of Tokyo
- Destination
- 1P/Halley
- Trajectory
- Estimated trajectory
- Flyby
- Technology Demonstrator