Skip to the content

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 star's profile: temperature, size, luminosity and disc size with their uncertainty, limb darkening, and the measured shapes of Altair, Regulus and Vega

starRotationfunction

The Bright Star Catalogue's projected rotation speed (v sin i) of a star, if it gives one.

Import it

import { starRotation } from "@johnmorrisdotca/hoshi-stars/profile";

Definition

function starRotation(hr: number): StarRotation | undefined

Parameters

NameTypeDescription
hrnumber

The Bright Star Catalogue number.

Returns

StarRotation | undefined

The speed with the catalogue's flags, or undefined.

Examples

import { starRotation } from "@johnmorrisdotca/hoshi-stars/profile";

console.log(starRotation(7557)?.vSinIKmS, starRotation(2061));
242 undefined

What it prints (run when this page was built)

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