What is the Helios deployment at Geostationary Orbit (GEO)?

Helios, built by Impulse Space, is recorded as a deployment at Geostationary Orbit (GEO) on the DEPLOY registry. Impulse Space operates the deployment directly.

Who operates Helios at Geostationary Orbit (GEO)?

Impulse Space, the manufacturer of Helios, operates this deployment directly. This is a maker-deploys-its-own-product arrangement rather than a customer pilot.

Have there been incidents at the Helios deployment at Geostationary Orbit (GEO)?

No active incidents affecting this deployment are recorded on the DEPLOY registry. Absence of recorded incidents is not a guarantee no incident occurred; DEPLOY records only sourced incidents and suppresses retracted ones.

Deployment

Helios at Geostationary Orbit (GEO)

Name: Helios at Geostationary Orbit (GEO)
Location: Geostationary Orbit (GEO)

High-energy kick stage designed for direct GEO insertion from LEO. 3.5 m diameter. Primary engine: Deneb (67 kN LOX/methane, ox-rich staged combustion, 380+ s Isp). Payload capacity ~4,000 kg. First flight targeted 2026 (Falcon 9, with two Mira vehicles). First commercial customer: SES (multi-launch agreement, first mission 2027).

Helios by Impulse Space · Catalog entry · 2 sources · not yet field-verified

Track Helios at Geostationary Orbit (GEO)

Machine-readable surfaces

Markdown mirror: /deployments/helios-ses-geo.md
JSON-LD: embedded in this page’s head
REST API: /v1/robots/56da6d35-d859-4af1-ab73-57c9a26ba0e6
Data documentation: /data
Query this programmatically: Deploy MCP

Key facts

Mission: First dedicated commercial Helios mission (SES)
Customer: SES (multi-launch agreement signed 2025-05-22)
Target: 2027
Profile: 4-ton-class satellite to GEO within 8 hours of LEO launch (same-day delivery)

Trust tier: Catalog entry · 2 sources · not yet field-verified
Last updated: 2026-06-07
Model: Helios
Company: Impulse Space
Location: Geostationary Orbit (GEO)
Status: planned
ID: 56da6d35-d859-4af1-ab73-57c9a26ba0e6

Sources (2)

Methodology: Verified · 2 sources (no primary) · last reviewed 2026-06-07

Verification posture

Verified

Low confidence

Review state

Stable

Last reviewed 2026-06-07

Maturity + lifecycle

Maturity stage: pilot

Lifecycle: active

Architectural position

Cohort: space

Sources by quality tier

2: unclassified; Unclassified source

The framework is documented at /methodology. Corrections at /corrections. Reviewer: DEPLOY editorial team.

Common questions

What is the Helios deployment at Geostationary Orbit (GEO)?: Helios, built by Impulse Space, is recorded as a deployment at Geostationary Orbit (GEO) on the DEPLOY registry. Impulse Space operates the deployment directly.
Who operates Helios at Geostationary Orbit (GEO)?: Impulse Space, the manufacturer of Helios, operates this deployment directly. This is a maker-deploys-its-own-product arrangement rather than a customer pilot.
Have there been incidents at the Helios deployment at Geostationary Orbit (GEO)?: No active incidents affecting this deployment are recorded on the DEPLOY registry. Absence of recorded incidents is not a guarantee no incident occurred; DEPLOY records only sourced incidents and suppresses retracted ones.

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