Epsilon S

Active

Japan Aerospace Exploration Agency (JAXA)

Sept. 14, 2013

Description

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
  • Stages
    4
  • Length
    24.4 m
  • Diameter
    2.5 m
  • Fairing Diameter
    2.5 m
  • Launch Mass
    91.0 T
  • Thrust
    2158.0 kN
Family
  • Name
    Epsilon S
  • Family
  • Variant
    S
  • Alias
  • Full Name
    Epsilon S
Payload Capacity
  • Launch Cost
    $39000000
  • Low Earth Orbit
  • Geostationary Transfer Orbit
  • Direct Geostationary
  • Sun-Synchronous Capacity
    600.0 kg

Japan Aerospace Exploration Agency

Government
Administrator: Hiroshi Yamakawa
JAXA 2003

The Japan Aerospace Exploration Agency (JAXA) is Japan's national aero-space agency. Through the merger of three previously independent organizations, JAXA was formed on 1 October 2003. JAXA is responsible for research, technology development and the launch of satellites into orbit, and is involved in many more advanced missions, such as asteroid exploration and possible manned exploration of the Moon. JAXA launch their Epsilon vehicle from the Uchinoura Space Center and their H-II vehicles from the Tanegashima Space Center.

Upcoming Spaceflights


Epsilon S | JV-LOTUSat-1

Japan Aerospace Exploration Agency | Japan
Uchinoura Space Center, Japan
TBD December, 2025
Status: To Be Determined
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.

Sun-Synchronous Orbit
Explore Share

Epsilon S | RAISE-4 & others

Japan Aerospace Exploration Agency | Japan
Uchinoura Space Center, Japan
TBD December, 2025
Status: To Be Determined
Mission:

RAISE-4 (RApid Innovative payload demonstration Satellite-4) is a satellite for on-orbit demonstrations of 15 demonstration components and equipment selected by public solicitation. The satellite will be operated in response to requests from the demonstration theme proposers, and will provide experimental data of the demonstration devices and environmental data during the experiments. 10 of the demonstrations are re-flight of those planned for RAISE-3, which failed to reach orbit in October 2022.

Sun-Synchronous Orbit
Explore Share

Falcon 9
Go
33 minutes ago
TRACERS
Space Launch Complex 4E - Vandenberg SFB, CA, USA

NASA's Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) mission, consisting of two identical satellites that will orb…


Falcon 9
Go
21 hours, 34 minutes ago
O3b mPower 9-10
Space Launch Complex 40 - Cape Canaveral SFS, FL, USA

2 high-throughput communications satellites in Medium Earth Orbit (MEO) built by Boeing and operated by SES.


Falcon 9
Success
3 days, 14 hours ago
Starlink Group 17-3
Space Launch Complex 4E - Vandenberg SFB, CA, USA

A batch of 24 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.


Falcon 9
Success
6 days, 12 hours ago
Project Kuiper (KF-01)
Space Launch Complex 40 - Cape Canaveral SFS, FL, USA

First of a three launches contract for Amazon's Kuiper low Earth orbit satellite internet constellation, with 24 satellites on board.


Falcon 9
Success
6 days, 16 hours ago
Starlink Group 15-2
Space Launch Complex 4E - Vandenberg SFB, CA, USA

A batch of 26 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.