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Uncommon star 25 EP

GL GJ 2154A

RA 348.5692° · Dec -19.6443° · star

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Score breakdown

· 6 badges
25 pts · Uncommon
Uncommon 34 pts → Rare
  • Deep red star +8
  • Binary star +6
  • Star +3
  • On the zodiac +3
  • Orange K-type star +3
  • Main-sequence star +2
Total score 25

9 more points to reach Rare.

Badges

  • Star · +3
  • Binary star · +6
  • On the zodiac · +3
  • Orange K-type star · +3
  • Main-sequence star · +2
  • Deep red star · +8

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 K7V — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.
  • 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 10.5 you'll want a small backyard telescope, over in Aquarius.
  • 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 September — that's when to go looking.

Could we get there?

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

Properties

absmag
8.973
binary
yes
bv
1.449
constellation
Aqr
dist ly
64.6878
luminosity
0.0224
mag
10.46
name
GL GJ 2154A
spect
K7V

About GL GJ 2154A

GL GJ 2154A is an uncommon star. It lies about 64.7 light-years from Earth, sits in the constellation Aqr, shines at apparent magnitude 10.46 and has spectral type K7V.

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 2154A in the constellation Aqr. At apparent magnitude 10.46, a small backyard telescope will bring it into view.

Like any astronomical target, GL GJ 2154A 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 2154A is an uncommon star

GL GJ 2154A scores 25 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 9 points would lift it into a rarer tier.

That score comes from 6 science badges — Star, Binary star, On the zodiac, Orange K-type star, Main-sequence star and Deep red 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.