# The asteroid Icarus has a perihelion of 0.19 AU and an orbital eccentricity of 0.83. How do you calculate the asteroid's orbital semimajor axis and aphelion distance from the Sun?

##### 1 Answer

**Semi-Major Axis Distance**:

**Aphelion Distance**:

#### Explanation:

**Eccentricity - Focal Point Relation**: **1**)

**Perihelion distance - Eccentricity Relation**:

**2**)

Using Equation **2**, solve for the semi-major axis distance

**Semi-Major Axis Distance**:

**Aphelion Distance**: