/**
 * Improved error handling for SGP4
 */
export declare enum Sgp4ErrorCode {
    NO_ERROR = 0,
    MEAN_ELEMENTS_INVALID = 1,// ecc >= 1.0 or ecc < -0.001 or a < 0.95 er
    MEAN_MOTION_NEGATIVE = 2,// mean motion less than 0.0
    PERT_ELEMENTS_INVALID = 3,// pert elements, ecc < 0.0 or ecc > 1.0
    SEMI_LATUS_RECTUM_NEGATIVE = 4,// semi-latus rectum < 0.0
    EPOCH_ELEMENTS_SUBORBITAL = 5,// epoch elements are sub-orbital
    SATELLITE_DECAYED = 6
}
export declare class Sgp4Error extends Error {
    code: Sgp4ErrorCode;
    constructor(code: Sgp4ErrorCode, message?: string);
    static getDefaultMessage(code: Sgp4ErrorCode): string;
}
export interface Sgp4Result<T> {
    success: boolean;
    value?: T;
    error?: Sgp4Error;
}