What range of altitude do Low-Earth orbits typically cover above the Earth's surface?

Low-Earth orbits (LEOs) are characterized by their proximity to the Earth's surface, typically ranging from about 160 kilometers (approximately 100 miles) up to around 2,000 kilometers (approximately 1,200 miles). The range of 250 to 1000 km fits perfectly within this classification, allowing satellites in these orbits to maintain a relatively low altitude.

The low altitude of LEOs is beneficial for various applications, including telecommunications, Earth observation, and data collection, as satellites can achieve higher resolution images and configure quicker communication times with ground stations. This operational window allows for efficient access to the Earth’s lower atmosphere as well.

The other altitude ranges listed do not align with the established parameters for low-Earth orbits and are more characteristic of medium or high orbits, such as Geostationary orbits, which are much higher than LEOs. Hence, the selection of 250 to 1000 km as the correct range for low-Earth orbits is well-supported by current understanding in orbital mechanics.