/**
 * Star reference frame — G-type baseline + spectral kelvin lookup.
 *
 * Pure-logic constants, no `three` import. Used by the star physics
 * module (luminosity, colour) and by the body's render layer when
 * deriving a star's surface temperature from its spectral type.
 */
/**
 * Reference stellar radius (world units) for a G-type star.
 * Other stars are sized relative to this baseline via `resolveStarData`.
 */
export declare const REF_STAR_RADIUS = 3;
/**
 * Reference stellar surface temperature in Kelvin (G-type baseline — Sun's
 * effective surface temperature). Used by `toStarParams` to normalise luminosity.
 */
export declare const REF_STAR_TEMP = 5778;
/**
 * Canonical surface temperature (K) per Morgan–Keenan spectral class.
 * Used as a fallback when a star config does not specify an explicit
 * temperature. Keys are single-letter spectral types (O, B, A, F, G, K, M).
 */
export declare const SPECTRAL_KELVIN: Record<string, number>;
/**
 * Tile-reference radius per spectral class — feeds the hexasphere
 * subdivision count so tile counts stay stable across spectral types
 * regardless of the (much larger) display sphere. Consumed by the star
 * strategy in `bodyTypeStrategy.ts`.
 */
export declare const STAR_TILE_REF: Record<string, number>;
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