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Rare star 42 EP

GL GJ 9209B

RA 94.0779° · Dec -59.2135° · star

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Score breakdown

· 5 badges
42 pts · Rare
Rare 50 pts → Epic
  • White dwarf (a burnt-out core) +22
  • Binary star +6
  • Intrinsically feeble (Mv > +12) +6
  • Blue-white star +5
  • Star +3
Total score 42

8 more points to reach Epic.

Badges

  • Star · +3
  • Binary star · +6
  • White dwarf (a burnt-out core) · +22
  • Blue-white star · +5
  • Intrinsically feeble (Mv > +12) · +6

Trivia

What makes it special

  • Not one star but two. It is a binary: two stars orbiting a shared centre of mass. More than half of all the 'stars' you can see are actually multiple systems.

What it actually is

  • Spectral class. Its spectrum reads DB4 — a white dwarf — the exposed, Earth-sized cinder of a dead star, with nothing left to burn.

Sense of scale

  • In perspective. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • How to spot it. At magnitude 14.1 it is far too faint for the eye: this one belongs to cameras and long exposures, over in Pictor.
  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.
  • Best time of year. It stands highest in the middle of the night around December — that's when to go looking.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Getting there

  • Aboard Voyager 1. ≈ 1.3 million years at Voyager 1's speed (17 km/s).

Properties

absmag
12.307
binary
yes
bv
-0.09
constellation
Pic
dist ly
74.1265
luminosity
0.001
mag
14.09
name
GL GJ 9209B
spect
DB4

About GL GJ 9209B

GL GJ 9209B is a rare star. It lies about 74.1 light-years from Earth, sits in the constellation Pic, shines at apparent magnitude 14.09 and has spectral type DB4.

It is a binary: two stars orbiting a shared centre of mass. More than half of all the 'stars' you can see are actually multiple systems.

How to see it

Look for GL GJ 9209B in the constellation Pic. At apparent magnitude 14.09, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, GL GJ 9209B is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. The visibility panel above works out tonight's viewing window for your saved location.

Why GL GJ 9209B is a rare star

GL GJ 9209B scores 42 points on Spacedle's rarity scale, which places it in the rare tier. Another 8 points would lift it into a rarer tier.

That score comes from 5 science badges — Star, Binary star, White dwarf (a burnt-out core), Blue-white star and Intrinsically feeble (Mv > +12) — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.