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Thread: a nightmare scenario for the IAU planet definition

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    Wink a nightmare scenario for the IAU planet definition



    Past items italicized. Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7, Orion and SW 80 and 120 ED, Orion ED80T, Orion 120 f8.3, Tasco 30x30, Edmund 40; Newtonians: Z12 f5, self made 6” f9, AT 8”f4, OC 8”f6.3, Orion 10" f4.7, Orion XX14i; Catadioptrics: VMC110L, Intes MK66, Orion 102 MakCas f12.7, Celestron 9.25 SCT and 9.25 Edge. EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, TV Nagler, ES100s, Edmund Orthoscopics, Baader Hyperions. Mounts: Orion Sirius EQG, Star Seeker III, Celestron CG5, Vixen Porta II, Orion Atlas, Losmandy G11

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    Default Re: a nightmare scenario for the IAU planet definition

    Serves them right for demoting Pluto.
    Dave Hunt
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    Default Re: a nightmare scenario for the IAU planet definition

    Poor Mr. Beelzebrown, first his "hypothetical Planet X" takes a hit and now this. Beautiful!
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    Default Re: a nightmare scenario for the IAU planet definition

    Hmmm...perhaps that alphabetical size classification scheme I posted here ages would be better than IAU's definitions...

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    Default Re: a nightmare scenario for the IAU planet definition

    Quote Originally Posted by ThinkerX View Post
    Hmmm...perhaps that alphabetical size classification scheme I posted here ages would be better than IAU's definitions...
    Size has the same disadvantages as "orbiting a star" and "clearing its orbit". It's only geometric and not based on intrinsic physical properties.

    Here's a better definition described
    https://phys.org/news/2017-02-geophy...efinition.html
    Past items italicized. Scopes: Refractors: Orion ST80 (mods for white light solar), SV ED80 f7, Orion and SW 80 and 120 ED, Orion ED80T, Orion 120 f8.3, Tasco 30x30, Edmund 40; Newtonians: Z12 f5, self made 6” f9, AT 8”f4, OC 8”f6.3, Orion 10" f4.7, Orion XX14i; Catadioptrics: VMC110L, Intes MK66, Orion 102 MakCas f12.7, Celestron 9.25 SCT and 9.25 Edge. EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, TV Nagler, ES100s, Edmund Orthoscopics, Baader Hyperions. Mounts: Orion Sirius EQG, Star Seeker III, Celestron CG5, Vixen Porta II, Orion Atlas, Losmandy G11

 

 

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