`createSatellites`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。

Make a group of satellites from their element sets. Each starts SGP4 once here; one that does not (bad numbers, decayed at its own epoch) is listed in refused and left out. It needs satellite.js (MIT, an optional peer dependency) and imports in a browser or on a server.

インポート

import { createSatellites } from "@johnmorrisdotca/chikyu-earth/satellites";

定義

function createSatellites(sets: readonly ElementSet[], options?: SatellitesOptions): Satellites

引数

名前	型	説明
`sets`	`readonly ElementSet[]`	Element sets in CelesTrak's JSON format (`ElementSet`), fetched by your page.
`options` (省略可)	`SatellitesOptions`	`maxAgeDays`: the oldest an element set may be at the moment shown.

戻り値

Satellites

The group: at(ms, out) for positions, exact, orbit, info, and counters.

例

import { createSatellites } from "@johnmorrisdotca/chikyu-earth/satellites";

const group = createSatellites([
  {
    OBJECT_NAME: "ISS (ZARYA)",
    OBJECT_ID: "1998-067A",
    EPOCH: "2026-11-02T10:25:21.580320",
    MEAN_MOTION: 15.49150046,
    ECCENTRICITY: 0.0007139,
    INCLINATION: 51.6332,
    RA_OF_ASC_NODE: 335.9757,
    ARG_OF_PERICENTER: 339.3739,
    MEAN_ANOMALY: 20.6961,
    NORAD_CAT_ID: 25544,
    BSTAR: 0.00012,
    MEAN_MOTION_DOT: 0.0001,
    MEAN_MOTION_DDOT: 0,
  },
]);
const noon = Date.UTC(2026, 10, 2, 12);
console.log(group.count, group.info(0, noon)?.altitudeKm.toFixed(0));

1 422

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/chikyu-earth 0.11.0 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。

createSatellites関数

定義

引数

戻り値

例

`createSatellites`関数