/**
 * Keplerian Orbital Mechanics Calculator
 *
 * Calculates celestial body positions using classical Keplerian orbital elements.
 * Based on the standard orbital mechanics equations used in astronomy.
 */
export interface OrbitalElements {
    /** Semi-major axis in AU (Astronomical Units) */
    semiMajorAxis: number;
    /** Orbital eccentricity (0 = circle, <1 = ellipse) */
    eccentricity: number;
    /** Inclination in degrees */
    inclination: number;
    /** Longitude of ascending node in degrees */
    longitudeAscending: number;
    /** Argument of periapsis in degrees */
    argumentPeriapsis: number;
    /** Mean anomaly at epoch (J2000) in degrees */
    meanAnomalyEpoch: number;
    /** Orbital period in days */
    orbitalPeriod: number;
    /** Parent body name for moons/satellites (optional) */
    parent?: string;
}
export interface Position3D {
    x: number;
    y: number;
    z: number;
    [index: number]: number;
}
/**
 * Convert radians to degrees
 */
export declare function toDegrees(radians: number): number;
/**
 * Calculate position in 3D space from orbital elements at a given time
 *
 * @param elements - Keplerian orbital elements
 * @param julianDate - Julian date (days since J2000 epoch)
 * @returns 3D position in AU (heliocentric or relative to parent)
 */
export declare function calculatePosition(elements: OrbitalElements, julianDate: number): Position3D;
/**
 * Convert Date to Julian Date (days since J2000.0 epoch)
 * J2000.0 = January 1, 2000, 12:00 TT (Terrestrial Time)
 *
 * @param date - JavaScript Date object
 * @returns Julian date (days since J2000)
 */
export declare function dateToJulian(date: Date): number;
/**
 * Convert Julian date to JavaScript Date
 *
 * @param julianDate - Days since J2000
 * @returns JavaScript Date object
 */
export declare function julianToDate(julianDate: number): Date;
/**
 * Generate orbital path points for visualization
 *
 * @param elements - Orbital elements
 * @param numPoints - Number of points to generate (default: 100)
 * @returns Array of 3D positions around the orbit
 */
export declare function generateOrbitalPath(elements: OrbitalElements, numPoints?: number): Position3D[];
//# sourceMappingURL=KeplerianCalculator.d.ts.map