mass of extra-solar-planet from M, v and V

Not Reviewed
Equation / Last modified by sspickle on 2015/11/03 02:01
mass of extra-solar-planet from M, v and V
Variable Instructions Datatype
Speed of planet Decimal (m/s)
Speed of star Decimal (m/s)
Mass of star Decimal (kg)
Type
Equation
Category
vCommons
Contents
3 variables
Rating
ID
sspickle.mass of extra-solar-planet from M, v and V
UUID
72c8ef13-7d67-11e5-9770-bc764e2038f2

If you know the mass of a star, and the orbital speed of the star and the planet, you can compute the mass of the planet using the fact that the total momentum is zero in the center of mass frame. This formula computes the mass of the planet using the mass of the star, and the two known speeds.