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Epic variable star 55 EP

GL Gl 412A

RA 166.3731° · Dec 43.5268° · star

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Score breakdown

· 10 badges
55 pts · Epic
Epic 78 pts → Anomaly
  • Nearby (<25 ly) +12
  • Deep red star +8
  • Binary star +6
  • Red dwarf +6
  • Variable star +5
  • Cool red M-type star +5
  • Never sets (northern circumpolar) +4
  • Gently variable +4
  • A named variable star +3
  • Main-sequence star +2
Total score 55

23 more points to reach Anomaly.

Badges

  • Variable star · +5
  • Nearby (<25 ly) · +12
  • Binary star · +6
  • Never sets (northern circumpolar) · +4
  • Cool red M-type star · +5
  • Main-sequence star · +2
  • Deep red star · +8
  • Red dwarf · +6
  • 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 M2Vvar — 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.
  • 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 8.8 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Ursa Major.
  • 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 March — that's when to go looking.

Properties

absmag
10.392
binary
yes
bv
1.491
constellation
UMa
dist ly
15.812
luminosity
0.0061
mag
8.82
name
GL Gl 412A
spect
M2Vvar
var amplitude
0.07
var designation
WX
var max
8.788
var min
8.858

About GL Gl 412A

GL Gl 412A is an epic variable star. It lies about 15.8 light-years from Earth, sits in the constellation UMa, shines at apparent magnitude 8.82 and has spectral type M2Vvar.

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 412A in the constellation UMa. At apparent magnitude 8.82, it is an easy target for binoculars.

Like any astronomical target, GL Gl 412A 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 412A is an epic variable star

GL Gl 412A scores 55 points on Spacedle's rarity scale, which places it in the epic tier. Another 23 points would lift it into a rarer tier.

That score comes from 10 science badges — Variable star, Nearby (<25 ly), Binary star, Never sets (northern circumpolar), Cool red M-type star, Main-sequence star, Deep red 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.