Us and every other star they observe. Curious that.
Carbon based life at the third planet of our nearest G2V star still think they are the reference of the universe. They continue to measure starts without taking into account they are not alone.
And worst, they still jam the radio spectrum with nonsense TV commercials. We Alpha-Centaurians have have the worst neighbors in the known universe.
Just wait until they see what we're like when we get there.