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Uncommon star 26 EP

53Chi Cet

RA 27.3963° · Dec -10.6864° · star

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Score breakdown

· 5 badges
26 pts · Uncommon
Uncommon 34 pts → Rare
  • Naked-eye visible +8
  • Binary star +6
  • Giant star +6
  • Star +3
  • Yellow-white F-type star +3
Total score 26

8 more points to reach Rare.

Badges

  • Star · +3
  • Naked-eye visible · +8
  • Binary star · +6
  • Yellow-white F-type star · +3
  • Giant star · +6

Trivia

What makes it special

  • Not one star but two. It is a binary: two stars orbiting a shared centre of mass. More than half of all the 'stars' you can see are actually multiple systems.

What it actually is

  • Spectral class. Its spectrum reads F3III — an F-type star — a little hotter, whiter and shorter-lived than the 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. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • How to spot it. At magnitude 4.7 you can see it with your own eyes from a dark site, over in Cetus.
  • 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 October — that's when to go looking.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Properties

absmag
2.834
binary
yes
bv
0.333
constellation
Cet
dist ly
75.6216
luminosity
6.4032
mag
4.66
name
53Chi Cet
spect
F3III

About 53Chi Cet

53Chi Cet is an uncommon star. It lies about 75.6 light-years from Earth, sits in the constellation Cet, shines at apparent magnitude 4.66 and has spectral type F3III.

It is a binary: two stars orbiting a shared centre of mass. More than half of all the 'stars' you can see are actually multiple systems.

How to see it

Look for 53Chi Cet in the constellation Cet. At apparent magnitude 4.66, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, 53Chi Cet 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 53Chi Cet is an uncommon star

53Chi Cet scores 26 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 8 points would lift it into a rarer tier.

That score comes from 5 science badges — Star, Naked-eye visible, Binary star, Yellow-white F-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.