[Hok]

Planet names are always named after the system name.
So for Quetzal II the system name should be Quetzal.
Usually trade routes should be within 2-3 warps from the starting system, so if you don't see it on the systems map u should explore within a 2-3 warps range.

Hint: do not accept trade routes to systems you don't know, explore first, then trade.