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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

JourneyStoptype

One body, with what a trip needs. gmKm3s2, massKg and escapeKmS are empty together when no page read here gives a mass.

Import it

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

Definition

interface JourneyStop {
    id: BodyId;
    kind: BodyFacts["kind"];
    parent?: HostId;
    name: {
        en: string;
        ja: string;
    };
    radiusKm: number;
    sunAu: number;
    gmKm3s2: number | null;
    massKg: number | null;
    escapeKmS: number | null;
}

Members

NameTypeDescription
idBodyId
kind"moon" | "star" | "planet" | "dwarf-planet"
parent (optional)HostId | undefined

The body a moon goes round.

name{ en: string; ja: string; }
radiusKmnumber

Equatorial radius in kilometres, the same number as BODIES (a moon's mean radius).

sunAunumber

Mean distance from the Sun in astronomical units. 0 for the Sun. A moon uses its parent's.

gmKm3s2number | null

Gravitational parameter, km^3/s^2. Empty when no cited page gives it.

massKgnumber | null

Mass in kilograms, GM / G with CODATA 2018 G. Empty when GM is empty.

escapeKmSnumber | null

Escape speed in km/s: the published figure, or sqrt(2 GM / radius) for a moon. Empty when GM is empty.

Examples

import { journeyStop, type JourneyStop } from "@johnmorrisdotca/wakusei-planets";

const earth: JourneyStop = journeyStop("earth");
console.log(earth.sunAu.toFixed(3), earth.escapeKmS);
1.000 11.19

What it prints (run when this page was built)

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