noun
near-Earth object; NEO
Technical astronomy term for asteroids or comets whose orbits bring them close to Earth.
地球近傍天体の観測は惑星防衛にとって重要だ。
Observation of near-Earth objects is important for planetary defense.
この望遠鏡は地球近傍天体を自動的に検出する。
This telescope automatically detects near-Earth objects.