~35,786 km. Fixed position over the equator; ideal for continuous broadcast and weather monitoring.
: It is used both as an introductory text for those entering the field and as a reference work for senior engineers. Complementary Resources ~35,786 km
" by . Released as part of the Space Technology Library series, it is widely considered the most comprehensive treatment of space mission design and astronautics available. Core Content & Scope ~35,786 km