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

BlackHoleOptionstype

The options of blackHoles: all optional, and together they narrow the list.

Import it

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

Definition

interface BlackHoleOptions {
    kind?: BlackHoleKind;
    status?: "confirmed" | "candidate";
    foundBy?: BlackHoleFound;
    constellation?: string;
}

Members

NameTypeDescription
kind (optional)"stellar" | "quiet" | "supermassive" | undefined

Only black holes of that kind.

status (optional)"confirmed" | "candidate" | undefined

Only black holes with that status.

foundBy (optional)"image" | "x-rays" | "orbit" | "microlensing" | "stars" | "gas" | "masers" | "echoes" | undefined

Only black holes found that way.

constellation (optional)string | undefined

Only black holes in that constellation (the abbreviation, Sgr).

Examples

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

const options: BlackHoleOptions = { kind: "stellar", status: "confirmed" };
console.log(blackHoles(options).map((b) => b.name));
[
  'M33 X-7',            'GRO J0422+32',
  'LMC X-3',            'LMC X-1',
  'A0620-00',           'GRS 1009-45',
  'XTE J1118+480',      'GRS 1124-684',
  'MAXI J1305-704',     'GS 1354-64',
  '4U 1543-475',        'XTE J1550-564',
  'XTE J1650-500',      'GRO J1655-40',
  'GX 339-4',           'H 1705-250',
  'Swift J1727.8-1613', 'V4641 Sgr',
  'MAXI J1820+070',     'XTE J1859+226',
  'GRS 1915+105',       'Cygnus X-1',
  'GS 2000+251',        'V404 Cygni'
]

What it prints (run when this page was built)

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