How Can We Know the Radius of the exoplanets?

To detect the radius of exoplanets, we have three important forms that are important to the nowadays science.

• 1st Form

  We can detect the radius with the principal formula of the density.

  d = M/V, with this we can isolate the radius: r = 3√((m/ρ)/((4/3)*π))

• 2nd Form

  An other form is with the variation of brightness of a heliocentric star to the exoplanet when it passes in front.

  R (exoplanet) = (√(AB/B)) * R**2 (star)

• 3rd Form

  The last form is through the linar regression, we can do it with Rstudio and CSV, or with the linear function.

  Y = mx+n -> Y= mass of the exoplanet; X= radius of the exoplanet

  m = [N*∑Xᵢ*Yᵢ+∑Xᵢ*∑Yᵢ]/[N*∑Yᵢ-(∑Xᵢ)^2]

  n = [∑Yᵢ-x*∑Xᵢ]/N

  X = [∑(Xᵢ-ẋ)*(yᵢ-ŷ)]/[N*σₓ*σᵧ]