Suppose you observe the visual binary pair Alpha Cen A and Alpha Cen B, as seen in the figure shown below.Assuming that it can be observed repeatedly over a period of time and we know the inclination of the orbits relative to our view, what two orbital parameters can be measured from the image? 
Definitions:
Variable Costing
A costing method that includes only variable manufacturing costs—direct materials, direct labor, and variable manufacturing overhead—in the cost of a unit of product.
Contribution Margin
The difference between sales revenue and variable costs, used to cover fixed costs and generate profit.
Variable Costing
A costing method that only includes variable costs (direct materials, direct labor, and variable manufacturing overhead) in product costs, while fixed costs are expensed in the period they are incurred.
Absorption Costing
An accounting method that includes both variable and fixed manufacturing overhead costs in the cost of a unit of product.
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