Ellipse Eccentricity from Semi-Axes: 40 units Semi-major Axis; 4 units Semi-minor Axis

Specific conversion page with reference context, calculator, and nearby values.

Author

Prof. Ingrid Johansson

Math editorial contributor

Norwegian political scientist at the University of Oslo, studying democratic resilience in Nordic welfare states

Reviewed by

Dr. Emeka Nwosu

Math content reviewer

Nigerian legal scholar with an SJD from Yale, focused on international trade law and African continental free trade agreements

Last updatedFebruary 22, 2026

PublishedFebruary 22, 2026

Table of Contents

  1. Value details
  2. Calculator
  3. Nearby reference values
  4. FAQs
  5. Methodology and review
  6. Navigation and related conversions

40 units Semi-major Axis; 4 units Semi-minor Axis converts to

0.994987 Eccentricity

Use this as a quick reference for Ellipse Eccentricity from Semi-Axes.

Value Details

Input: 40 units Semi-major Axis; 4 units Semi-minor Axis

Output: 0.994987 Eccentricity

Browse all reference values for Ellipse Eccentricity from Semi-Axes

Ellipse Eccentricity from Semi-Axes

Calculate ellipse eccentricity using e = sqrt(1 - b²/a²).

Calculated Result

Nearby Reference Values

Ellipse Eccentricity from Semi-Axes values near 40 units Semi-major Axis; 4 units Semi-minor Axis
ScenarioEccentricity
30 units Semi-major Axis; 10 units Semi-minor Axis0.942809 Eccentricity
30 units Semi-major Axis; 12 units Semi-minor Axis0.916515 Eccentricity
30 units Semi-major Axis; 15 units Semi-minor Axis0.866025 Eccentricity
30 units Semi-major Axis; 20 units Semi-minor Axis0.745356 Eccentricity
30 units Semi-major Axis; 25 units Semi-minor Axis0.552771 Eccentricity
30 units Semi-major Axis; 30 units Semi-minor Axis0 Eccentricity
40 units Semi-major Axis; 0.5 units Semi-minor Axis0.999922 Eccentricity
40 units Semi-major Axis; 1 units Semi-minor Axis0.999687 Eccentricity
40 units Semi-major Axis; 2 units Semi-minor Axis0.998749 Eccentricity
40 units Semi-major Axis; 3 units Semi-minor Axis0.997184 Eccentricity
40 units Semi-major Axis; 4 units Semi-minor Axis0.994987 Eccentricity
40 units Semi-major Axis; 5 units Semi-minor Axis0.992157 Eccentricity
40 units Semi-major Axis; 8 units Semi-minor Axis0.979796 Eccentricity
40 units Semi-major Axis; 10 units Semi-minor Axis0.968246 Eccentricity
40 units Semi-major Axis; 12 units Semi-minor Axis0.953939 Eccentricity
40 units Semi-major Axis; 15 units Semi-minor Axis0.927025 Eccentricity
40 units Semi-major Axis; 20 units Semi-minor Axis0.866025 Eccentricity
40 units Semi-major Axis; 25 units Semi-minor Axis0.780625 Eccentricity
40 units Semi-major Axis; 30 units Semi-minor Axis0.661438 Eccentricity
50 units Semi-major Axis; 0.5 units Semi-minor Axis0.99995 Eccentricity
50 units Semi-major Axis; 1 units Semi-minor Axis0.9998 Eccentricity

Frequently Asked Questions

Common questions about Ellipse Eccentricity from Semi-Axes, formulas, and expected usage.

What does the Ellipse Eccentricity from Semi-Axes calculator do?

It helps with measuring how circular or elongated an ellipse is in geometry and orbital models.

What formula does the Ellipse Eccentricity from Semi-Axes calculator use?

Ellipse eccentricity e = √(1 - b²/a²), with a ≥ b ≥ 0.

What inputs are valid?

Semi-major axis a must be positive, and semi-minor axis b must satisfy 0 ≤ b ≤ a.

When would I use this?

measuring how circular or elongated an ellipse is in geometry and orbital models

Methodology and Review

This page is generated from the same conversion definition used by the main calculator page, which keeps the calculator, reference table rows, and FAQ schema aligned.

Reviewer and update metadata are shown above and included in structured data. See our editorial policy, review process, and corrections policy.

Use this page as a fast lookup reference, then confirm final project values using applicable standards and manufacturer documentation.