太陽 たいよう けい外縁 がいえん天体 てんたいだったら
taiyōkeiga iententaidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 太陽系外縁天体

1. if it were a trans-Neptunian object; if it were a TNO

Tara Conditional
Astronomy