Celestine API Documentation - v0.2.0
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    Function getMarsPosition

    • Calculates the geocentric position of Mars.

      Parameters

      • jd: number

        Julian Date

      • options: EphemerisOptions = {}

        Optional calculation parameters

      Returns PlanetPosition

      Mars's position including longitude, latitude, distance, and speed

      Mars is the first outer planet (orbit larger than Earth's). Its opposition occurs every ~780 days when Earth passes between Mars and Sun, making Mars brightest and closest to Earth.

      Accuracy: ±1 arcminute for years 1800-2200.

      import { getMarsPosition } from 'celestine/ephemeris';

      const jd = 2451545.0; // J2000.0
      const mars = getMarsPosition(jd);
      // mars.longitude ≈ 355° (Pisces)

      Meeus, "Astronomical Algorithms", Chapter 33

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