冥王めいおう星型ほしがた天体てんたいだったら
mei ō hoshigata tentaidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 冥王星型天体

1. if/when it were a Pluto-type celestial body; if/when it was a Pluto-type celestial body

Tara Conditional
Astronomy