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Uncommon star 24 EP

18 Sco

RA 243.9053° · Dec -8.3694° · star

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Score breakdown

· 5 badges
24 pts · Uncommon
Uncommon 34 pts → Rare
  • Naked-eye visible +8
  • Sun-like G-type star +8
  • Star +3
  • On the zodiac +3
  • Main-sequence star +2
Total score 24

10 more points to reach Rare.

Badges

  • Star · +3
  • Naked-eye visible · +8
  • On the zodiac · +3
  • Sun-like G-type star · +8
  • Main-sequence star · +2

Trivia

What it actually is

  • Spectral class. Its spectrum reads G1V — a G-type star: the very same spectral class as our own Sun.
  • 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 5.5 you can see it with your own eyes from a dark site, over in Scorpius.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • Best time of year. It stands highest in the middle of the night around May — 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. ≈ 796.7 thousand years at Voyager 1's speed (17 km/s).

Properties

absmag
4.775
bv
0.652
constellation
Sco
dist ly
45.3373
luminosity
1.0715
mag
5.49
name
18 Sco
spect
G1V

About 18 Sco

18 Sco is an uncommon star. It lies about 45.3 light-years from Earth, sits in the constellation Sco, shines at apparent magnitude 5.49 and has spectral type G1V.

Its spectrum reads G1V — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for 18 Sco in the constellation Sco. At apparent magnitude 5.49, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, 18 Sco 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 18 Sco is an uncommon star

18 Sco 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 5 science badges — Star, Naked-eye visible, On the zodiac, 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.