export type AccuracyMode = "fast" | "visual" | "observational" | "precision";
export interface EquatorialCoordinate {
    readonly rightAscensionDegrees: number;
    readonly declinationDegrees: number;
}
export interface EclipticCoordinate {
    readonly longitudeDegrees: number;
    readonly latitudeDegrees: number;
}
export interface GalacticCoordinate {
    readonly longitudeDegrees: number;
    readonly latitudeDegrees: number;
}
export interface CatalogStar extends EquatorialCoordinate {
    readonly id: string;
    readonly name?: string;
    readonly aliases?: readonly string[];
    readonly constellation?: string;
    readonly bayerDesignation?: string;
    readonly flamsteedNumber?: number;
    readonly magnitude: number;
    readonly colorIndexBv?: number;
    readonly epochJulianYear?: number;
    readonly properMotionRaMasPerYear?: number;
    readonly properMotionDecMasPerYear?: number;
    readonly parallaxMas?: number;
    readonly radialVelocityKmPerSecond?: number;
    readonly spectralType?: string;
}
export interface Observer {
    readonly latitudeDegrees: number;
    readonly longitudeDegrees: number;
    readonly elevationMeters?: number;
}
export interface Atmosphere {
    readonly pressureHpa?: number;
    readonly temperatureCelsius?: number;
    readonly relativeHumidity?: number;
    readonly wavelengthMicrometers?: number;
}
export interface EarthOrientationParameters {
    readonly dut1Seconds?: number;
    readonly xPolarMotionArcseconds?: number;
    readonly yPolarMotionArcseconds?: number;
    readonly dXMas?: number;
    readonly dYMas?: number;
    readonly lodMilliseconds?: number;
}
export interface TimeScales {
    readonly dateUtc: Date;
    readonly julianDateUtc: number;
    readonly julianDateTai: number;
    readonly julianDateTt: number;
    readonly julianDateUt1: number;
    readonly taiMinusUtcSeconds: number;
    readonly ttMinusUtcSeconds: number;
    readonly dut1Seconds: number;
    readonly julianCenturyTt: number;
}
export interface ObservationOptions {
    readonly date: Date;
    readonly accuracy?: AccuracyMode;
    readonly dut1Seconds?: number;
    readonly ttMinusUtcSeconds?: number;
    readonly earthOrientation?: EarthOrientationParameters;
    readonly applyProperMotion?: boolean;
    readonly applyPrecession?: boolean;
    readonly applyNutation?: boolean;
    readonly applyAnnualAberration?: boolean;
    readonly applySolarDeflection?: boolean;
    readonly applyTopocentricParallax?: boolean;
    readonly applyPolarMotion?: boolean;
    readonly applyRefraction?: boolean;
    readonly atmosphere?: Atmosphere;
}
export interface ObservationStages {
    readonly icrs: EquatorialCoordinate;
    readonly propagated: EquatorialCoordinate;
    readonly meanOfDate: EquatorialCoordinate;
    readonly apparent: EquatorialCoordinate;
    readonly topocentric: EquatorialCoordinate;
}
export interface ObservedStar {
    readonly source: CatalogStar;
    readonly accuracy: AccuracyMode;
    readonly time: TimeScales;
    readonly stages: ObservationStages;
    readonly propagatedCoordinate: EquatorialCoordinate;
    readonly equatorialOfDate: EquatorialCoordinate;
    readonly localSiderealTimeDegrees: number;
    readonly hourAngleDegrees: number;
    readonly geometricAltitudeDegrees: number;
    readonly altitudeDegrees: number;
    readonly azimuthDegrees: number;
    readonly aboveHorizon: boolean;
    readonly distanceParsecs?: number;
    readonly color: string;
    readonly correctionsApplied: readonly string[];
}
export interface SkyOptions extends Omit<ObservationOptions, "date"> {
    readonly catalog: readonly CatalogStar[];
    readonly observer: Observer;
    readonly date?: Date;
    readonly magnitudeLimit?: number;
    readonly horizonLimitDegrees?: number;
}
export interface SkyFrame {
    readonly date: Date;
    readonly observer: Observer;
    readonly localSiderealTimeDegrees: number;
    readonly time: TimeScales;
    readonly stars: readonly ObservedStar[];
}
export interface SkyEngine {
    readonly destroyed: boolean;
    setDate(date: Date): SkyFrame;
    setObserver(observer: Observer): SkyFrame;
    setCatalog(catalog: readonly CatalogStar[]): SkyFrame;
    getFrame(): SkyFrame;
    destroy(): void;
}
export interface HorizontalCoordinate {
    readonly altitudeDegrees: number;
    readonly azimuthDegrees: number;
}
export interface CatalogQuery {
    readonly text?: string;
    readonly magnitudeLimit?: number;
    readonly center?: EquatorialCoordinate;
    readonly radiusDegrees?: number;
    readonly limit?: number;
}
export interface StarCatalog {
    readonly size: number;
    get(identifier: string): CatalogStar | undefined;
    query(query?: CatalogQuery): readonly CatalogStar[];
    all(): readonly CatalogStar[];
}
export interface AsyncStarCatalog {
    get(identifier: string): Promise<CatalogStar | undefined>;
    query(query?: CatalogQuery): Promise<readonly CatalogStar[]>;
}
export interface CatalogValidationIssue {
    readonly index: number;
    readonly id?: string;
    readonly field: string;
    readonly message: string;
}
export interface RiseSetTransitResult {
    readonly date: Date;
    readonly rise?: Date;
    readonly transit?: Date;
    readonly set?: Date;
    readonly maximumAltitudeDegrees: number;
    readonly circumpolar: boolean;
    readonly neverRises: boolean;
}
export interface VisibilityWindow {
    readonly start: Date;
    readonly end: Date;
    readonly maximumAltitudeDegrees: number;
}
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