リファレンス

星ごとの値の確かさ (位置・明るさ・色・視差・固有運動の出典と誤差、A・B・Cの等級)

import { … } from "@johnmorrisdotca/hoshi-stars/accuracy";

最小化と gzip 圧縮をしたサイズは 1.5 kB（読み込むものをすべて含み、esbuild で計測）

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。

エクスポート

名前	種類	概要
`AccuracySource`	型	Where a value is from: `BSC` the Yale Bright Star Catalogue, `GCTP` the Yale General Catalogue of Trigonometric Stellar Parallaxes, `2MASS` the Two Micron All Sky Survey, `dynamical` the Bright Star Catalogue's parallax from the orbit of a binary, `literature` a distance typed from a published paper (Betelgeuse, Rigel, Polaris).
`checkGrade`	関数	Whether a value is a grade: `"A"`, `"B"` or `"C"`.
`DistanceAccuracy`	型	The distance of a star in numbers: what the parallax's error makes of it.
`DistanceQuality`	型	How well a star's distance is known, from its parallax and the error the catalogue states: `good` (the error is under 5% of the parallax), `fair` (5% to 20%, or a dynamical parallax from a binary's orbit), `rough` (over 20%, or a parallax with no stated error) and `none` (no parallax: the distance is unknown).
`FieldAccuracy`	型	What is known about one value of a star.
`GRADE_RULES`	定数	The numbers the grade is decided by: a distance is `good` under `distance.good` of the parallax and `fair` up to `distance.fair` (the same bands as `distanceQuality`), and a position is modern when its error, or its resolution where it has no stated error, is at most `modernPositionArcsec`.
`gradeAtLeast`	関数	Whether a grade is at least as good as another: `A` is at least `B`, and `B` is at least `B`, but `C` is not at least `B`.
`STAR_GRADES`	定数	The grades, best first.
`starAccuracy`	関数	How well each value of a star is known, and its grade.
`StarAccuracy`	型	Everything `starAccuracy` says of one star.
`starGrade`	関数	A star's grade alone, worked out without building the whole record: the same answer as `starAccuracy(star).grade`, cheap enough to filter thousands of stars with.
`StarGrade`	型	The grade of a star: `A` a distance known to under 5% and a modern position, `B` a distance known to 20% or better (or one known to under 5% with a coarse position), `C` anything else: a position and a rough or missing distance.

ソースを見る GitHub で編集@johnmorrisdotca/hoshi-stars 0.47.0 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。