What Is a CubeSat? Stages and 2026 Cost of a Mission

CubeSats are small satellites standardised on a 10×10×10 cm unit (1U). Weighing a few kilograms, they can perform Earth observation, communications and scientific measurements at a tenth of the cost of traditional satellites.

Size and mission

1U–3U satellites are used for education and technology demonstration, and 6U–12U satellites for Earth observation, IoT communication and scientific missions. A 6U satellite weighs 9–12 kg and can generate about 40 W and carry a camera with 3–5 m resolution.

Development stages

• Mission definition (2–3 months): Payload, orbit and data requirements.
• Design and prototype (4–6 months): Power, communication, attitude control and flight computer.
• Integration and test (4–5 months): Clean-room assembly, vibration and thermal vacuum testing.
• Launch and early operations (2 months): Integration with the launcher, commissioning after orbit insertion.

In total a 6U satellite needs 14–18 months.

Cost items (2026, 6U Earth-observation satellite)

• Satellite development and production: ₺18–28 million
• Payload (camera): ₺6–10 million
• Launch (rideshare): ₺9–14 million
• Ground segment and one year of operations: ₺5–10 million

The total is about ₺38–62 million. In serial production unit cost can fall by up to 30%.

Examples of use

Agricultural productivity monitoring, forest fire detection, ship tracking (AIS), rural IoT and university experiments are the most common applications. The GU-1 satellites provided maps of the affected areas within 36 hours in the 2025 flood disaster.

Points to watch

Frequency allocation and international registration (ITU), launch permit, a space-debris mitigation plan and an end-of-life strategy are legal issues to plan at the project start. Ground-station access and data-processing infrastructure are the key to operational success.

Service model

The customer can bring only the payload and take platform, launch and operations from Gökbilge in a 'satellite as a service' model.

Team and infrastructure

A 6U CubeSat project typically involves a team of 12–18: a systems engineer, electronics designers, software developers, a mechanical designer, a test engineer and a project manager. At Gökbilge 70% of platform components are made in-house, so this team is less affected by supply delays.

When CubeSat, when large satellite?

CubeSats suit rapid development, low cost and renewable mission constellations. Missions requiring high-resolution imaging, long-life geostationary communication or high power need larger platforms. Most operators use both classes together.