Thus, the minimum possible size for halo orbits in the Sun-Earth system is approximately (240 x 660) 10³ km at L₁ and (250 x 675) 10³ km at L₂, sizes denoting the maximum excursion from the libration point in the x and y directions respectively.

Their constant weepings kept us awake.

cis- + Neptunian → cis-Neptunian

This classroom seats two hundred students.