Latus Rectum Calculator

Compute the length of the latus rectum (focal chord perpendicular to the major axis) for a parabola, ellipse, or hyperbola from its standard parameters.

Frequently Asked Questions

What is the latus rectum?

The chord of a conic that passes through a focus and is perpendicular to the major axis. Its length characterizes how wide the curve is at the focus.

How is the latus rectum used in orbits?

The semi-latus rectum (half of it) is the key shape parameter in the conic-section form of Kepler orbits: r equals semi-latus rectum divided by one plus eccentricity times cosine theta.

Latus rectum of a parabola y squared equals 4px?

Exactly 4 times the absolute value of p. For y squared equals 8x, p is 2 and the latus rectum is 8.

Important Disclaimer: Estimates for informational purposes only.

This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.