So I came on to see this planet in my scans. I didn't remember scanning it, but I remembered it had been shared quite a while ago. I assumed they had shared it again.

I click it and get this.

So I checked the feed, and it hadn't been shared.

happened to me alot as well, i think when the person leaves the legion the alert disappears from news feed but the planet stays there until timer would of expired

Yeah. But I don't think anyone has left...

maybe it's staying on everyone's list until the alerter logs on again (after the 12 hr mark) ?