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
Specifications
- Thrust
- 2,158 kN
- Height
- 24.4 m
- Diameter
- 2.5 m
- Launch mass
- 91 t
- Stages
- 4
- Launch cost
- $39M
- LEO capacity
- —
- GTO capacity
- —
- GEO capacity
- —
- SSO capacity
- 600 kg
Vehicle specifications from Launch Library; blanks are unpublished figures.
Flight record
Flights
0
Launches with a definitive outcome
Success rate
—
0 of 0
Current success streak
0
Landings
0
0 attempts · 0 droneship / 0 RTLS
Fastest turnaround
—
Between consecutive booster flights
Counted from padside's own launch record — the same basis as the Stats page.
Launches
Next: Epsilon S | JV-LOTUSat-1 — December 31, 2026
No completed launches on record yet.