Apparent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。
What the sky shows of a body at a time: its pose, the latitude the viewer sees it from (how open its rings are), the longitude at the middle of the disc, the phase and the size.
インポート
import type { Apparent } from "@johnmorrisdotca/wakusei-planets";定義
interface Apparent extends Pose {
id: BodyId;
time: number;
subObserverLat: number;
centralMeridian: number;
phaseAngle: number;
illumination: number;
distanceKm: number;
diameterDeg: number;
frame: {
right: Vec3;
up: Vec3;
toward: Vec3;
};
}メンバー
| 名前 | 型 | 説明 |
|---|---|---|
id | BodyId | How the body is turned. |
time | number | The instant, in milliseconds since 1970. |
subObserverLat | number | Degrees above (positive) or below the body's equator that the viewer sees it from: how open its rings are. |
centralMeridian | number | The longitude at the middle of the disc, degrees east, 0 to 360. |
phaseAngle | number | The Sun–body–viewer angle in degrees: 0 is full, 180 is new. |
illumination | number | The fraction of the disc that is lit, 0 to 1. |
distanceKm | number | The distance from the viewer in kilometres. |
diameterDeg | number | The angular diameter in degrees. |
frame | { right: Vec3; up: Vec3; toward: Vec3; } | The viewer's frame in J2000 ecliptic vectors, to turn more vectors into the same view. |
pole | Vec3 | The north pole. |
meridian | Vec3 | The direction of longitude 0 on the equator. |
light | Vec3 | The direction of the Sun, from the body. |
例
import { apparent, type Apparent } from "@johnmorrisdotca/wakusei-planets";
const moon: Apparent = apparent("moon", Date.UTC(2026, 10, 24, 14));
console.log(moon.illumination.toFixed(2));1.00出力（このページを作ったときに実行した結果）
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。