Giant planet or 'failed star?' Newfound mystery world blurs the lines

[Admin]

By tracing the corkscrew wobble of two stars as they move through the sky, the Gaia space mission has discovered one new giant "planet," plus a new brown dwarf.

Giant planet or 'failed star?' Newfound mystery world blurs the lines : Read more

 

[Helio]

This article makes sense as it holds to the mainstream view, as I understand it, that planets should be assumed to be brown dwarfs when their mass is under about 14x that of Jupiter.

The exoplanet.eu catalog, however, will have many with masses over 25x and some as high as 70x. Mass, however, isn't the key dividing line as the rule since 1999 is whether or not 1/2 of the original deuterium has burned.

The NASA website, IIRC, limits exoplanet masses to about 25x, thus their catalog is notably less in exoplanet number.

I'm curious if I've got the proper handle on this. Do I?

 

[Classical Motion]

I was surprised at the distance the star travels between loops. Sol might have an 11 maybe 22 year wobble. Wonder what it looks like at a distance.