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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

Dottype

One dot of a sheet: a star, where it is on the page and the numbers it carries (a star the lines pass again has more than one).

Import it

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

Definition

interface Dot {
    star: Star;
    x: number;
    y: number;
    r: number;
    numbers: number[];
    label: {
        x: number;
        y: number;
        anchor: "start" | "middle" | "end";
    };
    ring: boolean;
}

Members

NameTypeDescription
starStar
xnumber
ynumber
rnumber

The radius, in millimetres, from the star's brightness.

numbersnumber[]

The visit numbers, in drawing order; empty on a hard sheet.

label{ x: number; y: number; anchor: "start" | "middle" | "end"; }

Where the number is written (its left or middle and its baseline) and which way it is anchored.

ringboolean

A new line starts here: the child lifts the pencil.

Examples

import { dotsFigure, type Dot } from "@johnmorrisdotca/hoshi-stars/sheets";

const first: Dot = dotsFigure("Cru", { widthMm: 180, heightMm: 150 }).dots[0];
console.log(first.star.name ?? first.star.designation, first.numbers);
Gacrux [ 1 ]

What it prints (run when this page was built)

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