noun
low orbit; low Earth orbit; LEO
Technical term in astronautics and satellite engineering. Often used in contrast with 静止軌道 (geostationary orbit) or 中軌道 (medium Earth orbit).
多くの通信衛星は低軌道を周回している。
Many communication satellites orbit in low Earth orbit.
低軌道からの再突入には高度な熱防護が必要
Reentry from low orbit requires advanced thermal protection.
Medium Earth orbit, between low orbit and geostationary orbit.
Compound of 低 (low) and 軌道 (orbit). A straightforward modern technical term.