Translation guide
An orbit around Earth with a period matching Earth's rotation, commonly used for communication and weather satellites. In Japanese, the term is usually expressed as 静止軌道 (geostationary orbit) or more technically as 対地同期軌道.
The most common type of geosynchronous orbit, where the satellite appears fixed in the sky.
The standard term for geostationary orbit, widely used in news, textbooks, and everyday technical contexts.
Any orbit with a period equal to Earth's rotation, not necessarily circular or equatorial.
The precise technical term for geosynchronous orbit, used in aerospace engineering and academic contexts.
対地同期軌道には静止軌道の他に準同期軌道もある。
Geosynchronous orbits include geostationary orbits as well as semi-synchronous orbits.
静止軌道 (geostationary orbit) is a special case of 対地同期軌道 (geosynchronous orbit) with zero inclination and zero eccentricity. In everyday Japanese, 静止軌道 is used for most practical satellites, while 対地同期軌道 is reserved for precise technical discussions.
気象衛星は静止軌道上にある。
Weather satellites are in geostationary orbit.
Literally 'geostationary satellite orbit', emphasizing the satellite itself. Common in technical writing.
静止衛星軌道は赤道上空約36,000kmにある。
Geostationary orbit is about 36,000 km above the equator.
A less common synonym for geosynchronous orbit, sometimes seen in translated materials.
その衛星は地球同期軌道に投入された。
The satellite was placed into geosynchronous orbit.