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 · Black holes: 301 with a place, a mass and distance with ranges, how each was found and the paper behind each fact

blackHolesfunction

Every known black hole that has a place on the sky and a published mass or a published case for one: the stellar-mass ones in X-ray binaries (BlackCAT's 73 and a few more), the quiet ones (Gaia BH1, BH2 and BH3, VFTS 243, the lone black hole OGLE-2011-BLG-0462) and the supermassive ones at the centres of galaxies with a measured mass. The stellar ones come first, then the quiet, then the supermassive, each group by right ascension. Candidates are in the list with status "candidate"; gravitational-wave events are not (they have no single place).

Import it

import { blackHoles } from "@johnmorrisdotca/hoshi-stars/black-holes";

Definition

function blackHoles(options?: BlackHoleOptions): BlackHole[]

Parameters

NameTypeDescription
options (optional)BlackHoleOptions

kind, status, foundBy and constellation narrow the list.

Returns

BlackHole[]

A fresh array of the shared, frozen objects.

Examples

import { blackHoles } from "@johnmorrisdotca/hoshi-stars/black-holes";

console.log(blackHoles().length, blackHoles({ kind: "supermassive" }).length);
301 218

What it prints (run when this page was built)

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