ISS Ume (Ionosphere Sounding Satellite), Japan’s first ionospheric research satellite for shortwave radio forecasting. N-I from Tanegashima LA-N placed the craft in LEO; the second N-I flight and the only known orbital launch on a leap day.
- Outcome
- Success
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- 135 kg
- Flight
- 2nd
- of 7 N-I flights
- Date and time
- 29 February 1976, 03:30 UTC
- Rocket
- N-I
- Builder
- MHI
- Launch site
- Osaki Launch Complex, Tanegashima Space Center, Japan
- Payload
- Earth Science
- International designator
- 1976-019
- Launches in 1976
- 20th of 131
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
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