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Common star 19 EP

78Mu 2Cyg

RA 326.0326° · Dec 28.7431° · 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 G2 V — a G-type star: the very same spectral class as our own Sun.

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

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 1.3 million years at Voyager 1's speed (17 km/s).

Properties

absmag
4.339
binary
yes
constellation
Cyg
dist ly
73.0635
luminosity
1.601
mag
6.09
name
78Mu 2Cyg
spect
G2 V

About 78Mu 2Cyg

78Mu 2Cyg is a common star. It lies about 73.1 light-years from Earth, sits in the constellation Cyg, shines at apparent magnitude 6.09 and has spectral type G2 V.

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 78Mu 2Cyg in the constellation Cyg. At apparent magnitude 6.09, it is an easy target for binoculars.

Like any astronomical target, 78Mu 2Cyg 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 78Mu 2Cyg is a common star

78Mu 2Cyg 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.