distanceRange関数
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 least and the greatest distance between two bodies over a span, each with its moment: the span is scanned in coarse steps (as closestApproach does) and each turning point is narrowed to about a second of time by golden-section search, the greatest on the negated distance. If the distance only falls or only rises through the span, the end that is the extreme is returned and atEdge says so.
インポート
import { distanceRange } from "@johnmorrisdotca/wakusei-planets/nearest";定義
function distanceRange(a: BodyId, b: BodyId, options: Pick<ApproachOptions, "from" | "to">): DistanceRange引数
| 名前 | 型 | 説明 |
|---|---|---|
a | BodyId | One body. |
b | BodyId | The other. |
options | Pick<ApproachOptions, "from" | "to"> |
|
戻り値
DistanceRange
min and max, each { time, distanceKm, distanceAu, uncertaintyKm, atEdge }.
例
import { distanceRange } from "@johnmorrisdotca/wakusei-planets/nearest";
const { min, max } = distanceRange("earth", "mars", { from: Date.UTC(1990, 0, 1), to: Date.UTC(2020, 0, 1) });
console.log(min.time.toISOString().slice(0, 10), min.distanceAu.toFixed(3), "to", max.distanceAu.toFixed(3), "au");2003-08-27 0.373 to 2.675 au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。