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Uncommon star 24 EP

Xuange

RA 214.0961° · Dec 46.0883° · star

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Score breakdown

· 4 badges
24 pts · Uncommon
Uncommon 34 pts → Rare
  • Naked-eye visible +8
  • Has a proper name +8
  • White A-type star +5
  • Star +3
Total score 24

10 more points to reach Rare.

Badges

  • Star · +3
  • Naked-eye visible · +8
  • Has a proper name · +8
  • White A-type star · +5

Trivia

What it actually is

  • Spectral class. Its spectrum reads A0sh — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.

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 4.2 you can see it with your own eyes from a dark site, over in Boötes.
  • 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.

Getting there

  • Aboard Voyager 1. ≈ 1.7 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 154.6 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

absmag
1.769
bv
0.087
constellation
Boo
dist ly
99.0151
luminosity
17.0765
mag
4.18
name
Xuange
named
yes
spect
A0sh

About Xuange

Xuange is an uncommon star. It lies about 99 light-years from Earth, sits in the constellation Boo, shines at apparent magnitude 4.18 and has spectral type A0sh.

Its spectrum reads A0sh — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.

How to see it

Look for Xuange in the constellation Boo. At apparent magnitude 4.18, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, Xuange 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 Xuange is an uncommon star

Xuange 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 4 science badges — Star, Naked-eye visible, Has a proper name and White A-type 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.