Enormous alien planet discovered

  1. Greg Bernhardt

    Staff: Admin

    Giant Alien Planet Discovered in Most Distant Orbit Ever Seen

  2. jcsd
  3. Drakkith

    Staff: Mentor

    That's a big planet.
  4. Chronos

    Chronos 10,349
    Science Advisor
    Gold Member

    Interesting, that is close to the estimated mass range necessary for deuterium fusion. I can't help but wonder if that could partially account for its apparent infrared brightness.
  5. I thought >30 Jupiter masses and you were into brown dwarf territory?
  6. It's not an Alien Planet.
  7. Drakkith

    Staff: Mentor

    Technically I think it's an extrasolar planet.
  8. Chronos

    Chronos 10,349
    Science Advisor
    Gold Member

    While there is no universally recognized standard for distinguishing a brown dwarf from a planet, the point at which deuterium fusion can occur is clearly of interest. This limit is generally assumed to be around 13 Jupiter masses, but, could even be as low as 11 Jupiter masses under favorable conditions. For discussion see http://arxiv.org/abs/1008.5150, The Deuterium-Burning Mass Limit for Brown Dwarfs and Giant Planets. The author, David Spiegel, is a widely respected authority on this subject.
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