Created
September 19, 2018 02:43
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Did we find Vulcan?
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ref: https://twitter.com/aussiastronomer/status/1042193826205454336 | |
g(earth) = 9.81 | |
g(vulcan) = g(earth) * 1.4 | |
g(vulcan) = 9.81 * 1.4 | |
g(vulcan) = 13.734 | |
G = 6.67408e-11 | |
M(earth) = 5.972e24 | |
M(exoplanet) ~= M(earth) * 8 | |
M(exoplanet) ~= 4.7776e25 | |
Solve for r: g = G * M / r^2 | |
13.734 = G * 4.7776e25 / r^2 | |
13.734 * r^2 = G * 4.7776e25 | |
r^2 = (G * 4.7776e25) / 13.734 | |
r = sqrt ((G * 4.7776e25) / 13.734) | |
r = sqrt (3.1886085e15 / 13.734) | |
r = sqrt (2.3216896e14) | |
r = 15237091.586 | |
d(exoplanet) = r * 2 | |
d(exoplanet) = 15237091.586 * 2 | |
d(exoplanet) = 30474183.172 | |
d(exoplanet) = 30474.183172km | |
d(vulcan) = 13584km (cf. Memory Alpha) | |
d(exoplanet) != d(vulcan) | |
exoplanet != vulcan | |
:( |
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