Moved back to 2025 TBD due to another test firing failure for qualification of the Epsilon-S 2nd stage motor.
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JV-LOTUSat-1
Epsilon S
Has a launch date been confirmed?
A confirmed launch date has not been published in this record. Placeholder dates are not launch appointments.
Source record updated . This is a source update, not a confirmed launch time.
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What changed?
NET February 2025.
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Target time, not a confirmed liftoff.
Mission
Vietnamese Synthetic Aperture Radar Earth observation satellite build by NEC Corporation of Japan, based on Japan's ASNARO 2 satellite and the NEXTAR NX-300L satellite bus. The satellite will contribute to measures against natural disasters and climate change in Vietnam.
- Launch vehicle
- Epsilon S
- Mission type
- Earth Science
- Destination orbit
- Sun-Synchronous Orbit
- Launch pad
- Mu Center
- Provider
- Japan Aerospace Exploration Agency
The vehicle
Published configuration and flight history.

Epsilon S
The Epsilon S rocket is a Japanese solid-fuel rocket designed to launch scientific satellites. It is a follow-on project to the larger and more expensive M-V rocket which was retired in 2006. The Japan Aerospace Exploration Agency (JAXA) began developing the Epsilon in 2007. The first stage is based on SRB-3, the strap-on solid-rocket booster of H3
- Height
- 24.4 m
- Diameter
- 2.5 m
- Stages
- 4
- Recorded launches
- 0
- First flight
- 2013-09-14
Launch window
A calendar entry will be available when a date is confirmed.
A precise launch window has not been published.
Launch site & orbit
Uchinoura Space Center, Japan
Launch site & orbit
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Coverage & sources
Links supplied by the mission data provider.
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Mission coverage
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Further reading
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