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Uncommon star 28 EP

13Xi 1Lib

RA 223.5953° · Dec -11.8983° · star

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Score breakdown

· 5 badges
28 pts · Uncommon
Uncommon 34 pts → Rare
  • Naked-eye visible +8
  • Sun-like G-type star +8
  • Giant star +6
  • Star +3
  • On the zodiac +3
Total score 28

6 more points to reach Rare.

Badges

  • Star · +3
  • Naked-eye visible · +8
  • On the zodiac · +3
  • Sun-like G-type star · +8
  • Giant star · +6

Trivia

What it actually is

  • Spectral class. Its spectrum reads G7III — a G-type star: the very same spectral class as our own Sun.
  • Where it is in life. It is a giant. It has already exhausted its core hydrogen and swollen up enormously in response.

Sense of scale

  • In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.

Find it in the sky

  • How to spot it. At magnitude 5.8 you can see it with your own eyes from a dark site, over in Libra.
  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.
  • 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. ≈ 5.9 million years at Voyager 1's speed (17 km/s).

Properties

absmag
0.709
bv
0.982
constellation
Lib
dist ly
336.9381
luminosity
45.3315
mag
5.78
name
13Xi 1Lib
spect
G7III

About 13Xi 1Lib

13Xi 1Lib is an uncommon star. It lies about 336.9 light-years from Earth, sits in the constellation Lib, shines at apparent magnitude 5.78 and has spectral type G7III.

Its spectrum reads G7III — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for 13Xi 1Lib in the constellation Lib. At apparent magnitude 5.78, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, 13Xi 1Lib 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 13Xi 1Lib is an uncommon star

13Xi 1Lib scores 28 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 6 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 Giant 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.