Balloon launched on: 7/31/2026 at 5:30 JST
Launch site: Ofunato Port, Iwate, Japan
Balloon launched by: Astrox
Balloon manufacturer/size/composition: Zero Pressure Balloon
End of flight (L for landing time, W for last contact, otherwise termination time): 7/31/2026
Balloon flight duration (F: time at float only, otherwise total flight time in d:days / h:hours or m:minutes - ): 1 h
Landing site: In the Pacific Ocean, 20 km SE of Ofunato, Japan
The balloon was launched at 5:30 JST on July 31, 2026, from the Port of Ofunato in Iwate Prefecture. The 8-meter-diameter balloon carried a 40-kilogram gondola with measurement equipment. After reaching 4 km of altitude the flight was terminated, after which the payload descended by parachute and splashed down in the Pacific Ocean approximately 20 kilometers southeast of the launch site.
StratoCat is an independent, non-commercial project maintained to preserve and share the history of scientific and stratospheric ballooning. If you find the site useful, you can help keep it running with a small donation toward its operating costs. Every contribution, even the equivalent of a cup of coffee, is greatly appreciated.