地球 ちきゅう近傍 きんぼう しょう惑星 わくせいでしょう
chikyūkimbōshō waku seideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 地球近傍小惑星

1. Probably a near-Earth asteroid.

Polite
Presumptive
Conjecture
Astronomy