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Hoshi Stars星

The stars you can see without a telescope, with names, colours and distances; the 88 constellations with their lines and boundaries; the Messier objects; and seven map projections to draw them on.

Hoshi is the Japanese word 星 for a star. About the name

Contents

Reference

A names index for a search box: a row for each bright star and Messier object with its names in English and Japanese, designations, constellation, rank weight, an address-safe id and where to point, with lookup by id and by name

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

135.7 kB minified and gzipped, with everything it imports (measured with esbuild)

Exports

NameKindWhat it is
deepSkyRowfunctionThe row of a deep-sky object.
findNamefunctionThe row a name, a designation or an id names exactly, ignoring case, spacing, accents and the Greek letter's spelling: Betelgeuse, alpha Ori, α Orionis, HR 2061, M31, Messier 31, NGC 224, Andromeda Galaxy, ベテルギウス.
NAME_KINDSconstantThe kinds of row in the names index: star, cluster (open and globular), nebula (emission, reflection, planetary, supernova remnant), galaxy and other (an asterism, a double star Messier listed, a source that is none of those).
nameIndexfunctionAn index over rows: by id, by exact name and by a ranked search.
NameIndextypeWhat an index of rows offers: the rows, one by id, one by any name, and a ranked search.
nameKeyfunctionA text folded to compare, as findName does: lower case, no accents, Greek letters spelt out and one space, a superscript as its digit; M 31, Messier 31 and m31 give m31, NGC 0224 gives ngc224, HR 2061 and hr2061 give hr2061.
NameKindtypeOne kind of row: star, cluster, nebula, galaxy or other.
NameRowtypeOne row of the names index: a star or a deep-sky object with the names a search box would try, and where to turn the sky to it.
nameRowByIdfunctionOne row by its id (betelgeuse, alpha-orionis, hr-1234, m31): the reverse of the id every row carries.
nameRowsfunctionThe rows of the index: the 5,080 bright stars and the 110 Messier objects, brightest and best-known first (by weight), as a fresh array of rows.
searchNamesfunctionThe rows whose names match what was typed: those with a name that starts with it first (an exact name before those), then those that contain it, each by weight (bright and well known first).
slugOffunctionAn address-safe id from a text: lower-case ASCII letters and digits in runs joined by one hyphen; an accent is dropped (Boötes gives bootes) and a Greek letter is spelt out (α1 Centauri gives alpha1-centauri).

View sourceEdit on GitHubMade from the source of @johnmorrisdotca/hoshi-stars 0.47.0.