/**
 * Rise, transit, and set time calculations for celestial objects.
 * All angles in degrees unless noted otherwise.
 */
import type { VisibilityInfo } from "../types.js";
/**
 * Compute rise, transit, and set times for a celestial object.
 *
 * @param ra - Right ascension in degrees
 * @param dec - Declination in degrees
 * @param lat - Observer latitude in degrees (positive north)
 * @param lon - Observer longitude in degrees (positive east)
 * @param date - Date/time for the calculation
 * @param altitudeThreshold - Minimum altitude in degrees (default 0)
 * @returns VisibilityInfo with rise/transit/set times and current position
 */
export declare function riseTransitSet(ra: number, dec: number, lat: number, lon: number, date: Date, altitudeThreshold?: number): VisibilityInfo;
/**
 * Compute the current altitude and azimuth of a celestial object.
 */
export declare function currentPosition(ra: number, dec: number, lat: number, lon: number, date: Date): {
    altitude: number;
    azimuth: number;
};
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