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B Cosmological data margins of error

  1. Jun 16, 2016 #1
    I am currently creating a database of all the known cosmological objects, and need to know the percentage error in the following data:

    Diameter of the sun: 1.3914x108 metres

    Mass of sun: 1.989x1030 kilograms

    I have the orbital period of the sun to be: 2.75x107± 9.1% years
     
  2. jcsd
  3. Jun 16, 2016 #2

    mfb

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    2016 Award

    Staff: Mentor

    So you are at star number 1 of more than a billion?

    Check the publications for uncertainties. For the sun, the definition of "radius" itself is challenging, as it does not have a solid surface.
    The relative uncertainty on the mass of sun is dominated by the uncertainty on the gravitational constant, and highly correlated with the uncertainty on the mass of all other astronomical objects.
     
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