oogh, that's a hard one. Naming stuff off the cuff is a challenge for me, I tend to take a long time to think of a 'good' name that fits the thing I'm trying to name well. I'm getting better at not overthinking it so hard when it's not a super important decision (i.e. a video game character name), but for something like a star or an animal species I'd feel obligated to choose something that felt like it fit the thing I was naming well.
That all said, my brain is sticking to the letter 'G' right this moment. 'Gloost' sounds funny, I could see that being a name of a critter, or a planet/star system from a wacky sci-fi story.

