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Common variable star 21 EP

GL GJ 3743

RA 190.4353° · Dec 55.7247° · star

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Score breakdown

· 6 badges
21 pts · Common
Common 22 pts → Uncommon
  • Variable star +5
  • Never sets (northern circumpolar) +4
  • Gently variable +4
  • Orange K-type star +3
  • A named variable star +3
  • Main-sequence star +2
Total score 21

1 more point to reach Uncommon.

Badges

  • Variable star · +5
  • Never sets (northern circumpolar) · +4
  • Orange K-type star · +3
  • Main-sequence star · +2
  • Gently variable · +4
  • A named variable star · +3

Trivia

What it actually is

  • Spectral class. Its spectrum reads K3V — 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.
  • 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 8.3 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 April — that's when to go looking.

Could we get there?

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

Properties

absmag
6.426
bv
0.955
constellation
UMa
dist ly
76.2403
luminosity
0.2342
mag
8.27
name
GL GJ 3743
spect
K3V
var amplitude
0.06
var designation
NP
var max
8.245
var min
8.305

About GL GJ 3743

GL GJ 3743 is a common variable star. It lies about 76.2 light-years from Earth, sits in the constellation UMa, shines at apparent magnitude 8.27 and has spectral type K3V.

Its spectrum reads K3V — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.

How to see it

Look for GL GJ 3743 in the constellation UMa. At apparent magnitude 8.27, it is an easy target for binoculars.

Like any astronomical target, GL GJ 3743 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 3743 is a common variable star

GL GJ 3743 scores 21 points on Spacedle's rarity scale, which places it in the common tier. Another 1 point would lift it into a rarer tier.

That score comes from 6 science badges — Variable star, Never sets (northern circumpolar), Orange K-type star, Main-sequence 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.