Specifically the first to be colonised by Humans (so it's more of a big deal for them) what names do you like from pre-existing media, or what name can you think up?
As a marketing stunt you could call it "Heaven" or "Paradise". Presumably it would be profitable for companies to take people there (otherwise why go?) so calling it something like that will make the journey more sought after. "Heaven" is also a very common and memorable word.
"Do you want to go to Heaven?"