Jack of Harts

The world we named New Antarctica was the coldest nominally-habitable world in the Alpha Centauri binary system when we discovered them.  We never placed anything more than scientific outposts in the early decades of our space exploration as interstellar colony expeditions were too expensive to waste on a dirty little iceball like that after all.  So even though politicians declared it as a fifth habitable world, the rest of humanity ignored it for decades.