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Common star 19 EP

GL GJ 9155A

RA 66.0511° · Dec -57.0713° · star

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Score breakdown

· 4 badges
19 pts · Common
Common 22 pts → Uncommon
  • Sun-like G-type star +8
  • Binary star +6
  • Star +3
  • Main-sequence star +2
Total score 19

3 more points to reach Uncommon.

Badges

  • Star · +3
  • Binary star · +6
  • Sun-like G-type star · +8
  • Main-sequence star · +2

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 G4V+... — a G-type star: the very same spectral class as our own Sun.
  • 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 6.3 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Dorado.
  • 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 November — that's when to go looking.

Could we get there?

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

Properties

absmag
4.068
binary
yes
bv
0.659
constellation
Dor
dist ly
90.3478
luminosity
2.0549
mag
6.28
name
GL GJ 9155A
spect
G4V+...

About GL GJ 9155A

GL GJ 9155A is a common star. It lies about 90.3 light-years from Earth, sits in the constellation Dor, shines at apparent magnitude 6.28 and has spectral type G4V+....

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 9155A in the constellation Dor. At apparent magnitude 6.28, it is an easy target for binoculars.

Like any astronomical target, GL GJ 9155A 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 9155A is a common star

GL GJ 9155A scores 19 points on Spacedle's rarity scale, which places it in the common tier. Another 3 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, Binary star, Sun-like G-type star and Main-sequence star — 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.