Table H-1: Regions encountered by different mission types

Orbit	Regions encountered
Low inclination LEO (<50°)	Ionosphere
High-inclination LEO e.g. Polar orbit	Ionosphere, Auroral zone
Geostationary orbit	Outer magnetosphere, Plasmasphere, Magnetosheath (occasionally)
MEO circular orbit e.g. Galileo	Outer magnetosphere, Plasmasphere, Magnetosheath (possibly at high latitude)
Geostationary transfer orbit	Ionosphere, Plasmasphere, Outer magnetosphere, Magnetosheath (occasionally)
High apogee elliptical orbit	All regions can be encountered, depending on orbit.
L1, L4, L5 Lagrangian points	Solar wind
L2	Solar wind, magnetotail and distant magnetosheath
Interplanetary cruise	Solar wind
Planetary orbit / encounter	Planetary environment