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Wakusei Planets惑星

The Sun, the planets and their moons as a clean line drawing, a shaded realistic drawing or a painted surface map, with real sizes, tilt and rotation, and the moons where they are at any date and time.

Wakusei is the Japanese word 惑星 for a planet. About the name

Contents

Reference · Facts, line drawings and positions

MoonPlacetype

One moon, placed in a planet's system: in planet radii, x to the right, y up, z toward the viewer, with its distance from the planet and its phase angle.

Import it

import type { MoonPlace } from "@johnmorrisdotca/wakusei-planets";

Definition

interface MoonPlace {
    id: MoonId;
    x: number;
    y: number;
    z: number;
    distance: number;
    phaseAngle: number;
}

Members

NameTypeDescription
id"moon" | "phobos" | "deimos" | "io" | "europa" | "ganymede" | "callisto" | "mimas" | "enceladus" | "tethys" | "dione" | "rhea" | "titan" | "iapetus" | "miranda" | "ariel" | "umbriel" | "titania" | "oberon" | "proteus" | "triton" | "nereid" | "charon" | "nix" | "hydra" | "vanth" | "hiiaka" | "namaka" | "dysnomia"
xnumber
ynumber
znumber
distancenumber

The distance from the planet's centre in planet radii.

phaseAnglenumber

The Sun–moon–viewer angle in degrees (0 is full).

Examples

import { system, type MoonPlace } from "@johnmorrisdotca/wakusei-planets";

const io: MoonPlace | undefined = system("jupiter", Date.UTC(2026, 10, 2)).moons[0];
console.log(io?.id, io?.distance.toFixed(1));
io 5.9

What it prints (run when this page was built)

View sourceEdit on GitHubMade from the source of @johnmorrisdotca/wakusei-planets 0.24.0.