Talk:Gaussian gravitational constant

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Where does the magic number

 0.01720209895

come from ? -- DavidCary 19:17, 12 May 2004 (UTC)

It's the gravitational constant in other units:

$\sqrt{G} = \sqrt{ 6.67*10^{-11}\; \mathrm{N\,m^2/kg^2}}$

$= \sqrt{6.67*10^{-11} \frac{\mathrm{m}^3}{\mathrm{s}^2 \mathrm{kg}}}$

$= \sqrt{ 6.67*10^{-11} \frac{(86,\!400)^2 * (1.9891*10^{30})}{(1.496*10^{11})^3} \frac{\mathrm{AU}^3}{\mathrm{day}^2 \;\mathrm{mass}_{Sun}} }$

$= 0.0172\;\; \mathrm{AU}^{3/2}\; \mathrm{day}^{-1}\; \mathrm{mass}_{Sun}^{-1/2}$

--wwoods 01:11, 19 May 2004 (UTC)