Family-level launch record combining canonical variants, historical missions, public cadence forecasts, and available payload performance specs.
Historical missions are grouped by actual launch year. Forecast cadence uses family-level launch-rate rows.
| Year | Historical missions | Forecast launches |
|---|---|---|
| 2013 | 1 | 0 |
| 2016 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2026 | 0 | 2 |
| 2027 | 0 | 2 |
| 2028 | 0 | 2 |
| 2029 | 0 | 2 |
| 2030 | 0 | 2 |
| 2031 | 0 | 2 |
| 2032 | 0 | 2 |
| 2033 | 0 | 2 |
| 2034 | 0 | 2 |
| 2035 | 0 | 2 |
| 2036 | 0 | 2 |
Payload capacity by variant and target orbit when structured capacity rows are available.
| Variant | Orbit | Capacity | Altitude | Inclination | Source |
|---|---|---|---|---|---|
Epsilon S | LEO | 590 kg | Unknown | Unknown | Manual Epsilon S low-confidence small-launcher fallback. |
Latest launched missions using variants in this family.
| Mission | Variant | Launch |
|---|---|---|
| Launch 2022-F04 | Epsilon | Oct 12, 2022 |
| RAISE-2 | Epsilon 2PBS | Nov 9, 2021 |
| RAPIS | Epsilon 2PBS | Jan 18, 2019 |
| ASNARO 2 |
Canonical variants rolled up into this launch vehicle family.
| Variant | Stages | Missions | Status |
|---|---|---|---|
Epsilon | Not stated | 2 | Retired |
Epsilon 2 | Not stated | 1 | Retired |
Epsilon 2PBS | Not stated | 3 | Retired |
Epsilon S | Not stated | 0 | Development |
| 2037 | 0 | 2 |
| 2038 | 0 | 2 |
| 2039 | 0 | 2 |
| 2040 | 0 | 2 |
| 2041 | 0 | 2 |
1 launch location represented.
| Year | Location | Launches | Confidence | Basis |
|---|---|---|---|---|
| 2026 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. |
| 2027 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. |
| 2028 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. |
| 2029 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. |
| 2030 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. |
| 2031 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. |
| 2032 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. |
| 2033 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. |
| 2034 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. |
| 2035 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. |
| 2036 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. |
| 2037 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. |
| 2038 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. |
| 2039 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. |
| 2040 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. |
| 2041 | Uchinoura Space Center | M-V Launch Complex | 2 | 20% | Editable low-confidence Epsilon family annual throughput fallback. Site-year coverage backfill copied nearest prior site-rate row. |
Editable low-confidence Epsilon family annual throughput fallback.
Editable low-confidence Epsilon family annual throughput fallback.
Editable low-confidence Epsilon family annual throughput fallback.
Editable low-confidence Epsilon family annual throughput fallback.
Editable low-confidence Epsilon family annual throughput fallback.
Editable low-confidence Epsilon family annual throughput fallback.
Epsilon 2PBS |
| Jan 17, 2018 |
| ERG | Epsilon 2 | Dec 20, 2016 |
| SPRINT-A | Epsilon | Sep 14, 2013 |
Upcoming mission rows with announced launch timing.
| Mission | Variant | Announced |
|---|---|---|
No forecasted missionsNo upcoming announced mission rows are linked to this vehicle family. | ||
Editable low-confidence Epsilon family annual throughput fallback.
Editable low-confidence Epsilon family annual throughput fallback.
Editable low-confidence Epsilon family annual throughput fallback.
Editable low-confidence Epsilon family annual throughput fallback.
Editable low-confidence Epsilon family annual throughput fallback.
Editable low-confidence Epsilon family annual throughput fallback.
An ESA astronaut is three months into the Epsilon mission aboard the International Space Station.
Four of the eight cubesats flown on the mission were re-flights of cubesats lost in the previous Epsilon launch failure in October 2022.
Significant delays in the Epsilon-S program following multiple test-firing failures led JAXA to reassign the Kakushin Rising mission to Rocket Lab’s Electron.
JAXA moved RAISE-4 and its rideshares from the Epsilon-S rocket to Rocket Lab’s Electron after a series of failures during Epsilon-S development.
Sophie Adenot will perform more than 200 experiments during her Epsilon mission on the International Space Station.
Sophie Adenot will perform more than 200 experiments during her Epsilon mission on the International Space Station.
Sophie Adenot’s mission on the International Space Station is named Epsilon and will last nine months.
Sophie Adenot’s mission on the International Space Station is named Epsilon and will last nine months.
Epsilon-S Block 1 can support external satellite A launches to SSO with a maximum mass of 200 kg per satellite for two satellites.
The demonstration Epsilon-S payload is being developed with expectations equivalent to a system refresh and is being concretized.
Some Epsilon-S launches will be affected by the reduced lift of the re-adapted motor.
Epsilon-S Block 1 can launch LOTUSat-1 to SSO with an approximate satellite mass of 590 kg.
JAXA is conducting a cause investigation into second-stage motor combustion anomalies for the Epsilon E-21 motor.
Epsilon-S Block 1 can support JAXA’s space technology demonstration acceleration program (JAXA-STEPS) with a target payload mass of roughly 100 kg (TBD).
There is a possibility that LOTUSat-1 will not be carried on the demonstration Epsilon-S mission.
Epsilon-S Block 1 can support a JAXA high-altitude glider mission to SSO with a maximum satellite mass of 400 kg.
JAXA will adapt the existing Epsilon second-stage motor as the M-35a for an interim Epsilon-S Block 1 vehicle.
JAXA has deferred the larger update of the Epsilon second-stage motor designated E-21.
The Epsilon-S Block 1 configuration with the M-35a has an overall length of approximately 26.8 meters.
The first Epsilon-S Block 1 launch is scheduled for the end of JFY 2026 (approximately early 2027).