Aten asteroid
family of Earth-crossing asteroids that have an orbital semi-major axis less than that of the Earth (a < 1 AU) but an aphelion distance greater than the Earth's perihelion distance (Q > 0.983 AU)
en-US/ˈeɪdən ˈæstɚˌɔɪd/
family of Earth-crossing asteroids that have an orbital semi-major axis less than that of the Earth (a < 1 AU) but an aphelion distance greater than the Earth's perihelion distance (Q > 0.983 AU)