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Rare star 38 EP

HR 4754

RA 187.4758° · Dec -56.5249° · star

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Score breakdown

· 6 badges
38 pts · Rare
Rare 50 pts → Epic
  • Naked-eye visible +8
  • Under the Southern Cross +8
  • Deep red star +8
  • Giant star +6
  • Cool red M-type star +5
  • Star +3
Total score 38

12 more points to reach Epic.

Badges

  • Star · +3
  • Naked-eye visible · +8
  • Under the Southern Cross · +8
  • Cool red M-type star · +5
  • Giant star · +6
  • Deep red star · +8

Trivia

What it actually is

  • Spectral class. Its spectrum reads M1III — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.
  • 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 Crux.
  • 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. ≈ 8.9 million years at Voyager 1's speed (17 km/s).

Properties

absmag
-0.186
bv
1.572
constellation
Cru
dist ly
508.8236
luminosity
103.3713
mag
5.78
name
HR 4754
spect
M1III

About HR 4754

HR 4754 is a rare star. It lies about 508.8 light-years from Earth, sits in the constellation Cru, shines at apparent magnitude 5.78 and has spectral type M1III.

Its spectrum reads M1III — an M-type red star — and M stars are the silent majority: roughly three of every four stars in the galaxy are one.

How to see it

Look for HR 4754 in the constellation Cru. At apparent magnitude 5.78, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HR 4754 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 4754 is a rare star

HR 4754 scores 38 points on Spacedle's rarity scale, which places it in the rare tier. Another 12 points would lift it into a rarer tier.

That score comes from 6 science badges — Star, Naked-eye visible, Under the Southern Cross, Cool red M-type star, Giant star 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.