When no category really fits the best option is to just come up with a new name. Planets were initially defined by their motion in the nights sky. That’s cont

When no category really fits the best option is to just come up with a new name. Planets were initially defined by their motion in the nights sky. That’s continued to this day by saying they must have cleared their orbit. So if a large mass formed alone it really doesn’t fit the ancient or modern definition of a planet. Further, many of these things may eventually become stars as they attract enough mass. Calling something that turns into a star in a 10 billion years a planet until suddenly swapping to young stellar object when the conditions change, just doesn’t fit IMO.