`DeepSkyObject`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。

One deep-sky object. Positions are J2000 (equator and equinox of 2000), the same frame as Star.

インポート

import type { DeepSkyObject } from "@johnmorrisdotca/hoshi-stars/deep-sky";

ほかのエクスポート元: @johnmorrisdotca/hoshi-stars/deep-sky/ngc-ic

定義

interface DeepSkyObject {
    id: string;
    messier: string | undefined;
    ngc: string | undefined;
    ic: string | undefined;
    otherIds: string[];
    name: string | undefined;
    type: DeepSkyType;
    constellation: string | undefined;
    rightAscension: number;
    declination: number;
    magnitude: number | undefined;
    sizeArcmin: number | undefined;
}

メンバー

名前	型	説明
`id`	`string`	The Messier designation (`M31`) if the object has one, else the NGC (`NGC 7000`), else the IC (`IC 434`). Unique, and a name `deepSkyObject` finds.
`messier`	`string \| undefined`	The Messier designation (`M31`), or `undefined`.
`ngc`	`string \| undefined`	The New General Catalogue designation (`NGC 224`), or `undefined`. Where an object has several (a duplicate entry, a component), the lowest plain number.
`ic`	`string \| undefined`	The Index Catalogue designation (`IC 434`), or `undefined`.
`otherIds`	`string[]`	The object's other NGC and IC designations (`NGC 978A`, `NGC 1051` for the object that is also `NGC 961`), each one found by `deepSkyObject` too. Usually empty.
`name`	`string \| undefined`	The common name where Wikidata's English label is one (`Andromeda Galaxy`, `Crab Nebula`), else `undefined`.
`type`	`"other" \| "galaxy" \| "globular cluster" \| "open cluster" \| "nebula" \| "planetary nebula" \| "supernova remnant"`	The kind of object.
`constellation`	`string \| undefined`	The IAU three-letter constellation abbreviation (`And`), or `undefined`. It is the same text as `Star.constellation`.
`rightAscension`	`number`	Right ascension in degrees at J2000, 0 up to 360. Given to 0.0001 degree (0.36 arc-second).
`declination`	`number`	Declination in degrees at J2000, -90 to 90. Given to 0.0001 degree.
`magnitude`	`number \| undefined`	Visual (V band) magnitude of the whole object, or `undefined` where there is none (for the Messier objects there always is one). Smaller is brighter: M31 is 3.4.
`sizeArcmin`	`number \| undefined`	The major axis in arc-minutes, or `undefined` where it is not known (most NGC and IC objects).

例

import { deepSkyObject, type DeepSkyObject } from "@johnmorrisdotca/hoshi-stars/deep-sky";

const andromeda: DeepSkyObject = deepSkyObject("M31")!;
console.log(andromeda.id, andromeda.ngc, andromeda.name, andromeda.magnitude);

M31 NGC 224 Andromeda Galaxy 3.4

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/hoshi-stars 0.7.0 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。

DeepSkyObject型

定義

メンバー

例

`DeepSkyObject`型