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Rare star 40 EP

5Alp1Cap

RA 304.4119° · Dec -12.5082° · star

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Score breakdown

· 5 badges
40 pts · Rare
Rare 50 pts → Epic
  • Supergiant +18
  • Naked-eye visible +8
  • Sun-like G-type star +8
  • Star +3
  • On the zodiac +3
Total score 40

10 more points to reach Epic.

Badges

  • Star · +3
  • Naked-eye visible · +8
  • On the zodiac · +3
  • Sun-like G-type star · +8
  • Supergiant · +18

Trivia

What it actually is

  • Spectral class. Its spectrum reads G3Ib — a G-type star: the very same spectral class as our own Sun.
  • Where it is in life. It is a supergiant, hundreds of times wider than the Sun.

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 4.3 you can see it with your own eyes from a dark site, over in Capricornus.
  • 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 July — 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. ≈ 10 million years at Voyager 1's speed (17 km/s).

Properties

absmag
-1.909
bv
0.928
constellation
Cap
dist ly
569.2078
luminosity
505.359
mag
4.3
name
5Alp1Cap
spect
G3Ib

About 5Alp1Cap

5Alp1Cap is a rare star. It lies about 569.2 light-years from Earth, sits in the constellation Cap, shines at apparent magnitude 4.3 and has spectral type G3Ib.

Its spectrum reads G3Ib — a G-type star: the very same spectral class as our own Sun.

How to see it

Look for 5Alp1Cap in the constellation Cap. At apparent magnitude 4.3, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, 5Alp1Cap 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 5Alp1Cap is a rare star

5Alp1Cap scores 40 points on Spacedle's rarity scale, which places it in the rare 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 Supergiant — 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.