Timeline for How can Ganymede have an Earth-like gravity without us having realized it?
Current License: CC BY-SA 4.0
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| Sep 19, 2018 at 18:14 | history | edited | jdunlop | CC BY-SA 4.0 |
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| Sep 19, 2018 at 14:56 | comment | added | Oscar Bravo | I think there's a mistake in that paper you cite.. You can only get the mass of the sun as described therein. To get the mass of a planet, it needs to have a moon (the method allows you to get the mass of a central body - not those orbiting it). So the mass of Ganymede is estimated - not calculated. Unless it's determined by perturbations of other moons' orbits, but that's hardly trivial. | |
| Sep 18, 2018 at 14:53 | history | answered | ColonelPanic | CC BY-SA 4.0 |