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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 · The sky out to a distance, in layers: the stars and galaxies nearer than 10, 50, 100, 500 or 1,000 light-years, each distance band its own colour, the ones with an uncertain distance kept apart, and none placed at a guess

CERTAINTY_LIMITSconstant

The relative errors that divide a distance's certainty, the same as QUALITY_LIMITS of the constellation in 3D: a parallax known to under 5% is good, to 20% is fair, and worse (or with no error stated) is rough.

Import it

import { CERTAINTY_LIMITS } from "@johnmorrisdotca/hoshi-stars/distance";

Definition

const CERTAINTY_LIMITS: Readonly<{ good: 0.05; rough: 0.2; }> = Object.freeze({ good: 0.05, rough: 0.2 })

Examples

import { CERTAINTY_LIMITS } from "@johnmorrisdotca/hoshi-stars/distance";

console.log(CERTAINTY_LIMITS.good, CERTAINTY_LIMITS.rough);
0.05 0.2

What it prints (run when this page was built)

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