Celestine API Documentation - v0.2.0
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    Function getTrueNodeLongitude

    • Calculate the True North Node longitude.

      The true node includes perturbations from the Sun, causing it to oscillate around the mean node by up to ~1.5°.

      Parameters

      • jd: number

        Julian Date

      Returns number

      True North Node longitude in degrees [0, 360)

      import { getTrueNodeLongitude } from 'celestine';

      const jd = 2451545.0; // J2000.0
      const trueNode = getTrueNodeLongitude(jd);
      console.log(trueNode); // ~123.95°

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