池谷 いけがや せき彗星 すいせいだったら
ikegaya·sekisuiseidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 池谷・関彗星

1. If it were Ikegaya-Sekai comet; If Ikegaya-Sekai comet were

Tara Conditional