1 I/2017 UI Oumuamua

Discussion in 'Astronomy, Exobiology, & Cosmology' started by nebel, Nov 26, 2017.

  1. DaveC426913 Valued Senior Member

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    Nor am I.
    But it is every member's duty in the sciences to correct errors where they see them.
    I agree, let's move on.
     
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  3. DaveC426913 Valued Senior Member

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    Yep. If it were hollow and out were on the inside, as you suggested in post 4.

    But Radii's suggestion in post 12 - which is mostly what has been getting discussed - was about being on the outside. So there is no floor to stand on, only a "vertical" wall to cling to.



    Wait, what? It has a revolution of a little less than 8 hours. How does that relate to our "system"? What system?
     
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  5. nebel Valued Senior Member

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    I was referring to the rotation rate, length of day, ~ 10 hours of most of the planetary mass, (jupiter, saturn ( even earth, if you take the angular momentum of the moon inward) ). a long shot, but closer to anything else.
     
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  7. DaveC426913 Valued Senior Member

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    This is numerology.
    1. Find two unrelated things you want to relate.
    2. Cherry pick some traits that come close-ish.
    3. For ones that don't come close-ish, full-nelson them until they bend to your will.
    4. Ignore any that don't fit at all.
    5. Attach significance to the result, as if it has some meaning.
     
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  8. nebel Valued Senior Member

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    Nebel does not have the foggiest, but lists numbing number co - incidences.
    The 5 minute light minute multiples in planetary orbit diameter,
    The ~ 27 day coinciding of Solar, Moon rotation and our reproductive rithm.
    The cancelling of the Jupiter & Saturn rotation speeds and their orbital velocities.
     
  9. DaveC426913 Valued Senior Member

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    Yup.

    Wasn't it von Daniken that claimed the Statue of Liberty is an alien artifact? His proof was that the height of the SoL in furlongs was equal to the distance to A. Centuari in parsecs, minus the number of leap years since it was erected.

    You can make numbers do anything you want, as long as you include enough of them.


    Numerology is number 14 on the Periodic Table of Irrational Nonsense.
     
  10. nebel Valued Senior Member

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    You are taking liberties with the grade of numerology I presented, they are written in real ratios. There are comforting coincidences though: The Earth orbit diameter is ~ 1000 light seconds ~2AU The weight of the atmosphere is equal to ~ 10 meter of water.
     
    Last edited: Dec 18, 2017
  11. origin In a democracy you deserve the leaders you elect. Valued Senior Member

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    Maybe the mods will separate out the numerology from this thread and move it to pseudoscience.
     
  12. exchemist Valued Senior Member

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    This is ridiculous but the most ridiculous of all is to claim that the human menstrual cycle is fundamental to the solar system.
     
  13. nebel Valued Senior Member

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    not fundamental but seemingly in lock step with the rotation of almost all the mass in our neighbourhood. There is more to rhythms , than we might know now.
     
  14. exchemist Valued Senior Member

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    Why is the same not true of hamsters, then?
     
  15. nebel Valued Senior Member

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    very good question, because in science , often deeper understanding comes from discovering where the theory diverges from the ideal., and that could lead into different disciplines.

    relating to the OP, the sliver from interstellar space, if for some reason the new arrival has retained, or ever had the spin rate of its home system (unlikeely), we could conclude that their main planets' day is ~25 % shorter than ours.
     
    Last edited: Dec 18, 2017
  16. exchemist Valued Senior Member

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    What an irrelevant response.
     
  17. DaveC426913 Valued Senior Member

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    No, we couldn't.
    There are untold numbers of small bodies in our system, with a very wide range of rotation periods. If one of those ended up in another system, scientists there would be quite foolish to use it to conclude the rotation rate of anything in our system.
     
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  18. nebel Valued Senior Member

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    An article on CBC concluded that the tumbler is like a piece of driftwood arriving with the tides. Being able to study some of that mechanism would give us great insights.
     
  19. Michael 345 Looking for Bali in Nov Valued Senior Member

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    Prairie desert, tumbling tumble weed, other side of the desert tumbles at 20 miles per hour

    Please Register or Log in to view the hidden image!

     
  20. nebel Valued Senior Member

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    An artist's illustration of the interstellar object 'Oumuamua, which appears to be outgassing material. Scientists now suspect it is a comet after all, and not an asteroid.(ESA/Hubble, NASA, ESO, M. Kornmesser
    so, The interstellar interloper is in a hurry to get out of here. using Comet action, possibly the Yarkovsky effect. to accelerate by solar energy. of course, on approach, should not that same mechanism also have slowed it down?
    May be the Y-effect will spin it up to a 10 he rotation, to take back to where it came from a seeing constant of our solar system.
     
    Last edited: Jun 29, 2018
  21. RADII Registered Senior Member

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    Maybe I'm missing something. If Oumuamua is leaving the system @ [approx] (70,800 miles per hour as of July 1, 2018) then Yarkovsky is not going to have much of an effect. However Oumuamua IS also speeding up [well, not slowing down as fast as it should] for reasons as yet unknown.
     
  22. nebel Valued Senior Member

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    Right: The enhanced Yarkovsky effect from outgassing is most efficient nearest to the source of radiation, the Sun. The speeding up can perhaps be attributed to the same causes of the velocity variations that were detected in the Voyager probes .
    Why would there be a hurry to leave us?
     
  23. RADII Registered Senior Member

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