sci-fi worldbuilding guide progress
"Anomaly" here being the angle of the world to its orbit at 90° away from periastron.
The dashed line, in addition is a representation of temperature swings due to eccentricity; divide the values you get from this by 45, multiply by the average temperature of your world to get a rough idea of how big these will be before worldwide climatic effects.
Dick around with the sliders to see what happens, use it for your projects I guess~