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Rare star 34 EP

HR 4868

RA 192.5492° · Dec -60.4005° · star

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Score breakdown

· 5 badges
34 pts · Rare
Rare 50 pts → Epic
  • Bright giant +12
  • Under the Southern Cross +8
  • Distant (over 1,000 light-years) +6
  • White A-type star +5
  • Star +3
Total score 34

16 more points to reach Epic.

Badges

  • Star · +3
  • Distant (over 1,000 light-years) · +6
  • Under the Southern Cross · +8
  • White A-type star · +5
  • Bright giant · +12

Trivia

What it actually is

  • Spectral class. Its spectrum reads A5II — 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.
  • 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 6.7 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 April — that's when to go looking.

Could we get there?

  • Verdict. Impossible with our current technology — and the next millennium of it.

Getting there

  • Aboard Voyager 1. ≈ 29.9 million years at Voyager 1's speed (17 km/s).

Properties

absmag
-1.853
bv
0.348
constellation
Cru
dist ly
1698.7291
luminosity
479.9544
mag
6.73
name
HR 4868
spect
A5II

About HR 4868

HR 4868 is a rare star. It lies about 1,698.7 light-years from Earth, sits in the constellation Cru, shines at apparent magnitude 6.73 and has spectral type A5II.

Its spectrum reads A5II — 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 HR 4868 in the constellation Cru. At apparent magnitude 6.73, it is an easy target for binoculars.

Like any astronomical target, HR 4868 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 4868 is a rare star

HR 4868 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, Distant (over 1,000 light-years), Under the Southern Cross, White A-type star and Bright giant — 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.