Epsilon

updated 2 days ago

Japanese small-lift solid-fuel orbital rocket

Japan's solid-fuel small launcher has had a rough stretch — the sixth flight in October 2022 was the first Epsilon not to reach orbit. The improved Epsilon S has been grounded by two second-stage engine explosions during ground testing in 2023 and 2024, but JAXA plans a first flight for fiscal 2026 using an existing engine design.

We track every Epsilon launch.

Servicesince 2013

20132028

2013·first flight

launches: 6
success: 83%
upcoming: 2

Epsilon Launch Activity

Past launches and what's coming up

Dec 20201611:00UTC
Dec 202016
11:00UTC
Arase
Success
Jan 17201821:06UTC
Jan 172018
21:06UTC
ASNARO-2
Success
Jan 18201900:50UTC
Jan 182019
00:50UTC
Innovative Satellite Technology Demonstration-1
Success
Nov 09202100:55UTC
Nov 092021
00:55UTC
RAISE-2
Success
Oct 12202200:50UTC
Oct 122022
00:50UTC
AMATERU-I
Failed
NowJun 08 · 2026
Upcoming
2026
2026
LOTUSat-1
Jul2028
Jul2028
Solar-C

Full Launch History


July 2028	Solar-C Japan•Epsilon S	-	Epsilon S	Upcoming
2026	LOTUSat-1 Japan•Epsilon S	-	Epsilon S	Upcoming
Oct 12, 202200:50:43 UTCFailure	AMATERU-I Japan•Epsilon	-	Epsilon	Failure
Nov 9, 202100:55:16 UTC	RAISE-2 Japan•Epsilon	-	Epsilon	Success
Jan 18, 201900:50:20 UTC	Innovative Satellite Technology Demonstration-1 Japan•Epsilon	-	Epsilon	Success
Jan 17, 201821:06:11 UTC	ASNARO-2 Japan•Epsilon	-	Epsilon	Success
Dec 20, 201611:00:00 UTC	Arase Japan•Epsilon	-	Epsilon	Success
Sep 14, 201305:00:00 UTC	Hisaki Japan•Epsilon 4 Stages	-	Epsilon 4 Stages	Success

Epsilon

Upcoming