@observerly/astrometry/dist/planets.js

observerly's lightweight, zero-dependency, type safe astrometry library written in Typescript for calculating the position of celestial objects in the sky.

import { convertEclipticToEquatorial as E, convertEquatorialToHorizontal as A } from "./coordinates.js";
import { J2000 as g } from "./constants.js";
import { earth as h } from "./earth.js";
import { g as H } from "./epoch-nmyjNjKp.js";
import { c as o, e as u } from "./utilities-BM-rBPno.js";
// @license        Copyright © 2021-2023 observerly
const I = {
  uid: "01HD49QMD7GA502WXEMY1ZAG15",
  name: "Mercury",
  symbol: "☿",
  T: 0.2408467,
  m: 0.055274,
  r: 2439700,
  e: 0.205636,
  a: 0.3870993,
  i: 7.004979,
  ε: 252.250324,
  ϖ: 77.457796,
  Ω: 48.330766,
  isInferior: !0
}, P = {
  uid: "01HD49R1NASDCYK3ZBYYCBJTBW",
  name: "Venus",
  symbol: "♀",
  T: 0.615197,
  m: 0.8149984,
  r: 6051800,
  e: 67767e-7,
  a: 0.72333566,
  i: 3.39467605,
  ε: 181.9791,
  ϖ: 131.602467,
  Ω: 76.679843,
  isInferior: !0
}, J = {
  uid: "01HD4ARM2X130B6M2Q74JFKRW4",
  name: "Mars",
  symbol: "♂",
  T: 1.880848,
  m: 0.107447,
  r: 3389500,
  e: 0.093394,
  a: 1.52371,
  i: 1.849691,
  ε: -4.553432,
  ϖ: -23.943629,
  Ω: 49.559539,
  isInferior: !1
}, R = {
  uid: "01HD4AYRMZP734M8FVQGXDB5BV",
  name: "Jupiter",
  symbol: "♃",
  T: 11.862615,
  m: 317.828133,
  r: 69911e3,
  e: 0.048393,
  a: 5.202887,
  i: 1.3043975,
  ε: 34.396441,
  ϖ: 14.728479,
  Ω: 100.473909,
  isInferior: !1
}, b = {
  uid: "01HD4AYZAHS15TJJMZDQWV1TET",
  name: "Saturn",
  symbol: "♄",
  T: 29.447498,
  m: 95.160904,
  r: 58232e3,
  e: 0.053862,
  a: 9.536676,
  i: 2.485992,
  ε: 49.954244,
  ϖ: 92.598878,
  Ω: 113.662424,
  isInferior: !1
}, v = {
  uid: "01HD4AZ66TP0P2KY9A8XFMRQ4T",
  name: "Uranus",
  symbol: "♅",
  T: 84.016846,
  m: 14.535757,
  r: 25362e3,
  e: 0.0472574,
  a: 19.18916464,
  i: 0.772638,
  ε: 313.238104,
  ϖ: 170.954276,
  Ω: 74.016925,
  isInferior: !1
}, Y = {
  uid: "01HD4AZGMADD008W4XT4HEV9ZC",
  name: "Neptune",
  symbol: "♆",
  T: 164.79132,
  m: 17.147241,
  r: 24622e3,
  e: 867797e-8,
  a: 30.069923,
  i: 1.77004347,
  ε: -55.120029,
  ϖ: 44.964762,
  Ω: 131.784226,
  isInferior: !1
}, Z = [I, P, h, J, R, b, v, Y], T = (n, t) => {
  const s = H(n) - g;
  let e = (360 / 365.242191 * (s / t.T) + t.ε - t.ϖ) % 360;
  return e < 0 && (e += 360), e;
}, p = (n, t) => {
  const r = T(n, t);
  return 360 / Math.PI * t.e * Math.sin(o(r));
}, D = (n, t) => {
  const r = T(n, t), s = p(n, t);
  return (r + s) % 360;
}, l = (n, t) => (D(n, t) + t.ϖ) % 360, B = (n, t) => {
  const r = l(n, t), s = t.Ω || 0;
  return u(Math.asin(Math.sin(o(r - s)) * Math.sin(o(t.i)))) % 360;
}, f = (n, t) => {
  const r = D(n, t);
  return t.a * (1 - t.e ** 2) / (1 + t.e * Math.cos(o(r)));
}, G = (n, t) => {
  const r = l(n, t), s = B(n, t), e = f(n, t), c = t.Ω || 0, a = c + u(Math.atan2(Math.sin(o(r - c)) * Math.cos(o(t.i)), Math.cos(o(r - c)))), i = l(n, h), M = f(n, h);
  let m = Number.NEGATIVE_INFINITY;
  t.isInferior ? m = 180 + i + u(Math.atan2(e * Math.cos(o(s)) * Math.sin(o(i - a)), M - e * Math.cos(o(s)) * Math.cos(o(i - a)))) : m = a + u(Math.atan2(M * Math.sin(o(a - i)), e * Math.cos(o(s)) - M * Math.sin(o(i - a))));
  const y = u(Math.atan(e * Math.cos(o(s)) * Math.tan(o(s)) * Math.sin(o(m - a)) / (M * Math.sin(o(a - i)))));
  return {
    λ: m % 360,
    β: y
  };
}, Q = (n, t) => Z.filter((r) => r.name !== "Earth").map((r) => {
  const s = G(n, r), e = E(n, s), c = A(n, t, e);
  return { ...r, ...s, ...e, ...c };
});
export {
  p as getPlanetaryEquationOfCenter,
  G as getPlanetaryGeocentricEclipticCoordinate,
  f as getPlanetaryHeliocentricDistance,
  B as getPlanetaryHeliocentricEclipticLatitude,
  l as getPlanetaryHeliocentricEclipticLongitude,
  T as getPlanetaryMeanAnomaly,
  Q as getPlanetaryPositions,
  D as getPlanetaryTrueAnomaly,
  R as jupiter,
  J as mars,
  I as mercury,
  Y as neptune,
  Z as planets,
  b as saturn,
  v as uranus,
  P as venus
};
//# sourceMappingURL=planets.js.map