What is LEO? What does LEO mean?

LEO, ranging from 100 to 2,000 kilometers above Earth, facilitates various applications such as satellite communications, Earth observation, navigation, and space research.

Oct 09, 2024 at 01:59 pm

Understanding LEO: Definition and Meaning

1. Definition of LEO

LEO stands for Low Earth Orbit. It is an orbital path that ranges from 100 kilometers (62 miles) to 2,000 kilometers (1,243 miles) above Earth's surface. Objects in LEO, such as satellites and the International Space Station, are constantly circling the planet, completing one orbit in as little as 90 minutes.

2. Characteristics of LEO

• Low Altitude: LEO is the lowest orbital altitude, closest to Earth's surface.
• High Speed: Objects in LEO travel at speeds of approximately 27,000 kilometers per hour (16,777 miles per hour).
• Short Orbital Period: The period it takes for an object to complete one orbit in LEO can be as short as 90 minutes.
• Accessibility: LEO is relatively easy and inexpensive to access compared to higher altitudes.
• Observability: From Earth, objects in LEO are visible as bright dots moving across the night sky.

3. Uses of LEO

LEO is used for a wide range of applications, including:

• Satellite Communications: Transmitting and receiving signals for voice, data, and video communication.
• Earth Observation: Monitoring Earth's climate, environment, and resources using satellites.
• Navigation: Providing accurate location data through satellite-based systems like GPS.
• Space Research: Conducting scientific studies and experiments in space.
• International Space Station: Hosting astronauts for research and exploration missions.