Question 1

What is the approximate altitude of a satellite in Geostationary Orbit (GEO)?

Accepted Answer

35,786 km. A satellite at this specific altitude has an orbital period equal to Earth's rotation. This allows it to appear fixed over a single point on the equator. Most communication and weather satellites are placed in this high orbit.

Question 2

Which type of orbit is commonly used by the International Space Station (ISS)?

Accepted Answer

Low Earth Orbit (LEO). Low Earth Orbit typically extends from 160 km to 2,000 km above Earth's surface. It is the most accessible orbit for human spaceflight and satellite imaging. Objects in this orbit travel at very high speeds to avoid falling back into the atmosphere.

Question 3

What is the primary characteristic of a Polar Orbit?

Accepted Answer

It passes over the North and South Poles.. A Polar Orbit has a high inclination, allowing a satellite to scan the entire Earth as the planet rotates beneath it. This makes it ideal for global mapping and reconnaissance missions. It is often a sub-type of Low Earth Orbit.

Question 4

Sun-Synchronous Orbit (SSO) is a special type of which major orbit?

Accepted Answer

Polar Orbit. In an SSO, the satellite passes over any given point of the Earth's surface at the same local solar time. This ensures consistent lighting conditions for high-quality earth observation and climate monitoring. It is achieved by precisely balancing the orbit's altitude and inclination.

Question 5

Which orbit is primarily used for Global Positioning System (GPS) satellites?

Accepted Answer

Medium Earth Orbit (MEO). MEO is the region of space between LEO and GEO, typically around 20,200 km. It is used for navigation systems because it provides broad coverage with fewer satellites than LEO. Global systems like GPS and GLONASS operate in this altitude range.

Orbits — Set 1