← Back to dex
Uncommon variable star 24 EP

GL Gl 171.2A

RA 69.2009° · Dec 27.1322° · star

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 6 badges
24 pts · Uncommon
Uncommon 34 pts → Rare
  • Binary star +6
  • Variable star +5
  • Gently variable +4
  • On the zodiac +3
  • Orange K-type star +3
  • A named variable star +3
Total score 24

10 more points to reach Rare.

Badges

  • Variable star · +5
  • Binary star · +6
  • On the zodiac · +3
  • Orange K-type star · +3
  • Gently variable · +4
  • A named variable star · +3

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 K2 — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.
  • It changes. This star does not hold still: its brightness rises and falls on a rhythm of hours, days or years, either pulsing in size or being eclipsed by a companion.

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 8.1 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Taurus.
  • 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 November — that's when to go looking.

Could we get there?

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

Properties

absmag
6.828
binary
yes
bv
1.104
constellation
Tau
dist ly
58.5978
luminosity
0.1617
mag
8.1
name
GL Gl 171.2A
spect
K2
var amplitude
0.11
var designation
V833
var max
8.058
var min
8.168

About GL Gl 171.2A

GL Gl 171.2A is an uncommon variable star. It lies about 58.6 light-years from Earth, sits in the constellation Tau, shines at apparent magnitude 8.1 and has spectral type K2.

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 171.2A in the constellation Tau. At apparent magnitude 8.1, it is an easy target for binoculars.

Like any astronomical target, GL Gl 171.2A 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 171.2A is an uncommon variable star

GL Gl 171.2A scores 24 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 10 points would lift it into a rarer tier.

That score comes from 6 science badges — Variable star, Binary star, On the zodiac, Orange K-type star, Gently variable and A named variable 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.