If you want #Pluto to be a planet again, shouldn't the #Moon be a planet, too? @AlanStern says yes. http://nyti.ms/1yF44Z5
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@kchangnyt Seems to me that if you want to call earth-moon system a dual planet, the barycenter shouldn't be inside one of them.@AlanStern
@Rand_Simberg @AlanStern is calling all round moons planets. The barycenter is irrelevant.
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@kchangnyt So all it takes is hydrostatic equlibrium? Ceres, too?@AlanStern -
@Rand_Simberg@AlanStern Yup. 22 planets, I believe.
End of conversation
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