地球 ちきゅう近傍 きんぼう天体 てんたいであれば
chikyūkimbōtentaideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 地球近傍天体

1. If it is a near-Earth object.; When it is a near-Earth object.

Ba Conditional
Astronomy