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Rocket file · LV-460

Eris Block 1

Gilmour Space Technologies · Eris · IN SERVICE

Eris Block 1 is an expendable launch vehicle built by Gilmour Space Technologies. It stands 25.0 m tall, lifts 305 kg to low Earth orbit, first flew on 29 July 2025. It has flown 1 times with 0 successes, a success rate of 0.0%. Its next flight is Eris-1 | Flight Two for Gilmour Space Technologies, no earlier than Q1 2027.

Specification

Vehicle spec sheet

ON FILE
Height25.0 m
Diameter2.0 m
Payload to LEO305 kg
Payload to GTONOT ON FILE
Maiden flight29 July 2025
ReusableNo, expendable
Launch costNOT ON FILE
StatusIN SERVICE

As listed by Launch Library 2. The cost is Launch Library’s figure, not a quoted price. Figures for rockets outside the sixty most-flown were last read on 2026-11-05.

Flight record

Reliability

ON RECORD
Total flights1
Successful0
Failed1
Success rate0.0%
Landing attempts0
Landing successN/A
Scheduled1
Variant1

About Eris-1

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

Upcoming flights

Eris Block 1 in the archive

From NASA's public image library and Wikimedia Commons. Each photo shows the credit its licence asks for and links back to where it came from.

The occultation of the dwarf planet Eris in November 2010
The occultation of the dwarf planet Eris in November 2010ESO/L. Calçada · CC BY 4.0Wikimedia Commons ↗
51 Eri b (NIRcam image) (weic2504b)
51 Eri b (NIRcam image) (weic2504b)NASA, ESA, CSA, STScI, W. Balmer (JHU), L. Pueyo (STScI), M. Perrin (STScI) · CC BY 4.0Wikimedia Commons ↗
HD 135344B, HD 135344 Bb and protoplanetary disk (ERIS instrument)
HD 135344B, HD 135344 Bb and protoplanetary disk (ERIS instrument)ESO/F. Maio et al. · CC BY 4.0Wikimedia Commons ↗

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Common questions

How many times has Eris Block 1 flown?
1 times, with 0 successes and 1 failures. Another 1 flights are scheduled.
What is Eris Block 1's success rate?
0.0%. That's 0 successful flights out of 1 attempts.
When is the next Eris Block 1 launch?
Eris-1 | Flight Two, flown by Gilmour Space Technologies. It's set for no earlier than Q1 2027 from Eris Pad.
How much can Eris Block 1 lift to orbit?
Launch Library 2 lists Eris Block 1 at 305 kg to low Earth orbit.
Is Eris Block 1 reusable?
No. Launch Library 2 lists Eris Block 1 as expendable, so no stage is recovered to fly again.