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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 · /chart

OBLIQUITY_J2000constant

The mean obliquity of the ecliptic at J2000, the tilt of the Earth's axis to its orbit, in degrees: 84,381.406 arc-seconds, the value the IAU 2006 precession model (Capitaine, Wallace and Chapront 2003) fixes. It is a published constant of the J2000 frame the stars are in, so the ecliptic drawn here is the one of that frame.

Import it

import { OBLIQUITY_J2000 } from "@johnmorrisdotca/hoshi-stars/chart";

Definition

const OBLIQUITY_J2000: number = 84381.406 / 3600

Examples

import { OBLIQUITY_J2000 } from "@johnmorrisdotca/hoshi-stars/chart";

console.log(OBLIQUITY_J2000.toFixed(4));
// 23.4393
23.4393

What it prints (run when this page was built)

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