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Uncommon star 25 EP

HD 108313

RA 186.7608° · Dec -61.3852° · star

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Score breakdown

· 4 badges
25 pts · Uncommon
Uncommon 34 pts → Rare
  • Under the Southern Cross +8
  • Sun-like G-type star +8
  • Giant star +6
  • Star +3
Total score 25

9 more points to reach Rare.

Badges

  • Star · +3
  • Under the Southern Cross · +8
  • Sun-like G-type star · +8
  • Giant star · +6

Trivia

What it actually is

  • Spectral class. Its spectrum reads G5III+... — 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 7.3 it is just past naked-eye reach — ordinary binoculars will pull it in, over in Crux.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
  • Best time of year. It stands highest in the middle of the night around March — 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. ≈ 12.8 million years at Voyager 1's speed (17 km/s).

Properties

absmag
0.572
bv
0.91
constellation
Cru
dist ly
729.6553
luminosity
51.428
mag
7.32
name
HD 108313
spect
G5III+...

About HD 108313

HD 108313 is an uncommon star. It lies about 729.7 light-years from Earth, sits in the constellation Cru, shines at apparent magnitude 7.32 and has spectral type G5III+....

Its spectrum reads G5III+... — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for HD 108313 in the constellation Cru. At apparent magnitude 7.32, it is an easy target for binoculars.

Like any astronomical target, HD 108313 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 HD 108313 is an uncommon star

HD 108313 scores 25 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 9 points would lift it into a rarer tier.

That score comes from 4 science badges — Star, Under the Southern Cross, 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.