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Rare star 34 EP

HR 4818

RA 190.3458° · Dec -46.1456° · star

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Score breakdown

· 5 badges
34 pts · Rare
Rare 50 pts → Epic
  • Bright giant +12
  • Naked-eye visible +8
  • Deep red star +8
  • Star +3
  • Orange K-type star +3
Total score 34

16 more points to reach Epic.

Badges

  • Star · +3
  • Naked-eye visible · +8
  • Orange K-type star · +3
  • Bright giant · +12
  • Deep red star · +8

Trivia

What it actually is

  • Spectral class. Its spectrum reads K3II — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.
  • Where it is in life. It is a bright giant, well on its way to the largest stars there are.

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 Centaurus.
  • 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 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. ≈ 15.9 million years at Voyager 1's speed (17 km/s).

Properties

absmag
-1.378
bv
1.475
constellation
Cen
dist ly
905.989
luminosity
309.8846
mag
5.84
name
HR 4818
spect
K3II

About HR 4818

HR 4818 is a rare star. It lies about 906 light-years from Earth, sits in the constellation Cen, shines at apparent magnitude 5.84 and has spectral type K3II.

Its spectrum reads K3II — a K-type star. Orange K dwarfs are the marathon runners of the galaxy, burning steadily for tens of billions of years.

How to see it

Look for HR 4818 in the constellation Cen. At apparent magnitude 5.84, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HR 4818 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 HR 4818 is a rare star

HR 4818 scores 34 points on Spacedle's rarity scale, which places it in the rare tier. Another 16 points would lift it into a rarer tier.

That score comes from 5 science badges — Star, Naked-eye visible, Orange K-type star, Bright giant and Deep red 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.