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Eris-1

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Gilmour Space Technologies (GST)

July 29, 2025

Description

Eris is a 3 stage orbital launch vehicle designed to deliver up to 305kg into a low earth orbit.

Specifications

Stages
3
Length
25.0 m
Diameter
2.0 m
Fairing Diameter
1.5 m
Launch Mass
―
Thrust
―

Family

Name
Eris-1
Family
―
Variant
1
Alias
―
Full Name
Eris Block 1

Payload Capacity

Launch Cost
―
Low Earth Orbit
305.0 kg
Geostationary Transfer Orbit
―
Direct Geostationary
―
Sun-Synchronous Capacity
215.0 kg

Gilmour Space Technologies

Private

CEO: Adam Gilmour

GST 2013

Gilmour Space Technologies is a venture-funded Australian space company headquartered in Queensland, Australia that is developing hybrid-engine rockets and associated technology to support the development of a low-cost space launch vehicle.

Upcoming Spaceflights

Eris-1 | Flight Two

Gilmour Space Technologies | Australia
Bowen Orbital Spaceport
TBD December, 2026

Status: To Be Determined

Mission:

Second test flight of Gilmour Space's orbital launch vehicle Eris.

Low Earth Orbit

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Previous Flights

flew on one previous launch(es).

Eris-1 | Maiden Flight

Gilmour Space Technologies | Australia
Bowen Orbital Spaceport
July 29, 2025, 10:35 p.m.

Status: Launch Failure

Mission:

Maiden flight of Gilmour Space's orbital launch vehicle Eris.

Low Earth Orbit

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Recent Launches

Long March 2D

Success

3 days, 6 hours ago

4 x SatNet test satellites

Launch Complex 3 (LC-3/LA-1) - Xichang Satellite Launch Center, People's Republic of China

Officially described as "Satellite-Internet Technology Demonstration Satellites". Probably 4 test satellites for the Chinese state-owned LEO commu…

Falcon 9

Success

3 days, 9 hours ago

Starlink Group 17-41

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.

Atlas V 551

Success

4 days ago

Amazon Leo (LA-07)

Space Launch Complex 41 - Cape Canaveral SFS, FL, USA

Amazon Leo, formerly known as Project Kuiper, is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, thi…

Falcon 9

Success

4 days, 11 hours ago

Starlink Group 10-53

Space Launch Complex 40 - Cape Canaveral SFS, FL, USA

A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.

Long March 7A

Success

1 week ago

TJSW-24

201 - Wenchang Space Launch Site, People's Republic of China

Chinese classified satellite claimed to be for communication technology test purposes. Actual mission not known.