リファレンス

`BodyFacts`型

リファレンスの説明と例は英語です。見出しと目次は日本語です。

The facts of one body: its radius, flattening, axial tilt, pole, prime meridian, rotation, colour, rings and the features a line drawing shows.

インポート

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

定義

interface BodyFacts {
    id: BodyId;
    kind: "star" | "planet" | "dwarf-planet" | "moon";
    parent?: HostId;
    name: {
        en: string;
        ja: string;
    };
    radiusKm: number;
    flattening: number;
    tiltDeg: number;
    pole: {
        ra: number;
        dec: number;
    };
    prime: {
        w0: number;
        rate: number;
    };
    rotationHours: number;
    synchronous?: boolean;
    axesKm?: readonly [
        number,
        number,
        number
    ];
    colour: string;
    showLon?: number;
    rings?: readonly RingBand[];
    features?: readonly Feature[];
}

メンバー

名前	型	説明
`id`	`BodyId`
`kind`	`"moon" \| "star" \| "planet" \| "dwarf-planet"`
`parent` (省略可)	`HostId \| undefined`	The planet or dwarf planet a moon goes round.
`name`	`{ en: string; ja: string; }`
`radiusKm`	`number`	The equatorial radius in kilometres (a moon's mean radius).
`flattening`	`number`	(equatorial − polar) / equatorial.
`tiltDeg`	`number`	The angle between the spin axis and the orbit's normal, in degrees. Above 90 the spin is backwards.
`pole`	`{ ra: number; dec: number; }`	The north pole's right ascension and declination, J2000, in degrees (IAU).
`prime`	`{ w0: number; rate: number; }`	The prime meridian at J2000, in degrees, and how fast it turns, in degrees a day (negative: backwards).
`rotationHours`	`number`	The sidereal rotation period in hours; negative when it turns backwards.
`synchronous` (省略可)	`boolean \| undefined`	A moon that always shows the same face to its planet.
`axesKm` (省略可)	`readonly [number, number, number] \| undefined`	The semi-axes in kilometres along the line to the planet, along the orbit and along the pole, for a moon that is far from round.
`colour`	`string`	The body's mean colour, `#rrggbb`.
`showLon` (省略可)	`number \| undefined`	The longitude a portrait faces, degrees east: the side with the body's best-known features.
`rings` (省略可)	`readonly RingBand[] \| undefined`
`features` (省略可)	`readonly Feature[] \| undefined`

例

import { BODIES, type BodyFacts } from "@johnmorrisdotca/wakusei-planets";

const uranus: BodyFacts = BODIES.uranus;
console.log(uranus.tiltDeg, uranus.rotationHours);

97.77 -17.24

出力（このページを作ったときに実行した結果）

ソースを見る GitHub で編集@johnmorrisdotca/wakusei-planets 0.24.0 のソースから作成しました。

この日本語は、まだ日本語を母語とする方の確認を受けていません。訂正を歓迎します。

BodyFacts型

定義

メンバー

例

`BodyFacts`型