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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 · Printable sheets: connect-the-dots constellations, the constellations for a latitude, a star wheel to cut out and a sky map for each month

skyForLatitudefunction

Every constellation as a place at a latitude sees it, best known first: always up (every star of its figure above the horizon all night, all year), never seen (no star of its figure ever rises) or seasonal, with the month it is highest in the evening sky (about 21:00 by the Sun on the 15th) and how high it climbs. Pass a month to keep only the ones above 15 degrees in the evening sky of that month and the ones always up.

Import it

import { skyForLatitude } from "@johnmorrisdotca/hoshi-stars/sheets";

Definition

function skyForLatitude(latitude: number, month?: number): RegionEntry[]

Parameters

NameTypeDescription
latitudenumber

Degrees north of the equator (negative south), -90 to 90.

month (optional)number | undefined

1 to 12, to list what is up in that evening; leave it out for all 88.

Returns

RegionEntry[]

The entries, best known first.

Examples

import { skyForLatitude } from "@johnmorrisdotca/hoshi-stars/sheets";

const sydney = skyForLatitude(-33.9);
console.log(sydney.find((one) => one.constellation.abbreviation === "UMi")?.standing, sydney.find((one) => one.constellation.abbreviation === "Cru")?.standing);
never always

What it prints (run when this page was built)

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