# Mass from Period and Separation

Not Reviewed
M =
Mass from Period and Separation
Variable Instructions Datatype
Separation Separation between bodies of the system Decimal (ua)
Orbital Period Period of orbit Decimal (year)
Type
Equation
Category
vCommons
Contents
2 variables
Rating
ID
sspickle.Mass from Period and Separation
UUID
625171c9-7b7a-11e5-a3bb-bc764e2038f2

In a binary system in which two objects orbit a common center of mass the mass of the system is related to the distance between the two objects (separation) and the period of their common orbit. This equation computes the mass of the entire system (both masses added together) given the two other quantities.