Troly-155-01c 

I’m an hypothetical planet named:
Prtion
Story;
 the collision of Theia and yourng version of earth and we all know it formed the moon and earth as we know of today,  someone Theia flew into space and and that other part of Theia formed into an new GanyMede-sized rocky icy planet (Prtion)
Moons of Prtion:
Opia 
Njta