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Epsilon
Photo: 海人 · Wikimedia Commons · CC BY-SA 4.0
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Epsilon

Military Space Launch Vehicles · Japan · 2013
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Epsilon

Epsilon
Epsilon Photo: 海人 · Wikimedia Commons · CC BY-SA 4.0
* Absolute score — assessed within category · no era adjustment
Payload Capacity
30
Reliability
50
Cost-Efficiency
40
Responsiveness / Cadence
20
Reusability
0
Orbit Versatility
25
Precision
35
Technology
45
Strategic Value
20
Human-Rating
0
Origin Japan
CategoryMilitary Space Launch Vehicles
EraModern Era
In service2013
Operators5 countries
Quantity6
Data Quality86%
28
Military Space Launch Vehicles MASS Rating
28/31
Modern Era
224/296
All-Time
Military Space Launch Vehicles · 10 axes scored
Payload Capacity
30
Reliability
50
Cost-Efficiency
40
Responsiveness / Cadence
20
Reusability
0
Orbit Versatility
25
Precision
35
Technology
45
Strategic Value
20
Human-Rating
0
ⓘ Regardless of era, the same scoring system applies to all units in the military space launch vehicles category.
01 / Overview
Epsilon
Country
Production
2013–
Quantity
6
Unit Price (current)
$39.0M
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
MILITARY SPACE LAUNCH VEHICLES · MODERN ERA
28
PERFORMANCE/PRICE
45
UNIT COST (2025 USD)
$39.0M
Inflation: +%0
28
military space launch vehicles category
ⓘ Performance/Price and MASS score are computed across all units in the military space launch vehicles category, regardless of era.
02 / Specs & Design
◎General6MOD.6
  • Vehicle Typesmall-lift launch vehicle
  • First Flight2013
  • ManufacturerIHI Corporation
  • Stages3
  • StatusOperational
  • In ServiceYes
◈Performance7MOD.7
  • Payload to LEO1,500 kg
  • Payload to SSO600 kg
  • Liftoff Thrust2,271
  • Liftoff Mass100 t
  • Height27.2 m
  • Diameter2.5 m
  • Success Rate5
▣Propulsion5MOD.5
  • First-Stage Propellantsolid propellant
  • First-Stage Engines1
  • ReusableNo
  • Human-RatedNo
  • Total Launches6
◇Cost1MOD.1
  • Cost per Launch39,000,000 USD
03 / History
SERVICE LIFESPANStill in Service
  1. 2013Production started
13
years in service
6
units produced
5
countries operating
ⓘ The producing country still actively operates it.
04 / Operators
📚 Sources
📖 ENCYCLOPEDIA Browse the Military Space Launch Vehicles entry →