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Common star 20 EP

GL Gl 516B

RA 203.1861° · Dec 16.8102° · star

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Score breakdown

· 4 badges
20 pts · Common
Common 22 pts → Uncommon
  • Binary star +6
  • Red dwarf +6
  • Cool red M-type star +5
  • Star +3
Total score 20

2 more points to reach Uncommon.

Badges

  • Star · +3
  • Binary star · +6
  • Cool red M-type star · +5
  • Red dwarf · +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 dM3.5e — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.
  • Where it is in life. It is on the main sequence, quietly fusing hydrogen in its core exactly as the Sun does.

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 12.3 it is far too faint for the eye: this one belongs to cameras and long exposures, over in Coma Berenices.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around April — that's when to go looking.

Could we get there?

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

Properties

absmag
11.606
binary
yes
constellation
Com
dist ly
44.8879
luminosity
0.002
mag
12.3
name
GL Gl 516B
spect
dM3.5e

About GL Gl 516B

GL Gl 516B is a common star. It lies about 44.9 light-years from Earth, sits in the constellation Com, shines at apparent magnitude 12.3 and has spectral type dM3.5e.

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 Gl 516B in the constellation Com. At apparent magnitude 12.3, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, GL Gl 516B 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 Gl 516B is a common star

GL Gl 516B scores 20 points on Spacedle's rarity scale, which places it in the common tier. Another 2 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, Binary star, Cool red M-type star and Red dwarf — 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.