import { Angle, Unit } from './angle';
export declare class SphericalPosition {
    protected _longitude: Angle;
    protected _latitude: Angle;
    constructor(longitude?: Angle | number, latitude?: Angle | number, longUnit?: Unit, latUnit?: Unit);
    get longitude(): Angle;
    get rightAscension(): Angle;
    get altitude(): Angle;
    get azimuth(): Angle;
    get latitude(): Angle;
    get declination(): Angle;
    distanceFrom(p: SphericalPosition): Angle;
    toString(): string;
}
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