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Common exoplanet 21 EP

HD 33564 b

RA 80.6379° · Dec 79.2318° · exoplanet

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Score breakdown

· 3 badges
21 pts · Common
Common 22 pts → Uncommon
  • Its star is visible to the naked eye +12
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 21

1 more point to reach Uncommon.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Its star is visible to the naked eye · +12

Trivia

Hard to believe

  • Denser than iron. It is packed tighter than solid iron — whatever it is made of, it is not ordinary rock.

What it actually is

  • What it is made of. Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.

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 5.1 you can see it with your own eyes from a dark site.
  • Never sets. So far north that from Britain, Canada or northern Europe it never dips below the horizon — it is up every clear night of the year.
  • Best time of year. It stands highest in the middle of the night around December — 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. ≈ 1.2 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
8.14
diameter km
159452.5
discovery facility
Haute-Provence Observatory
discovery method
Radial Velocity
discovery year
2005
dist ly
68.3398
eccentricity
0.34
eq temp k
344.43
host star teff
6250
insolation
2.8331
mag
5.1011
mass earth
2892.1
name
HD 33564 b
orbital period days
388
radius earth
12.5
semi major au
1.1
spect
F6 V
sys num planets
1
sys num stars
1

About HD 33564 b

HD 33564 b is a common exoplanet. It lies about 68.3 light-years from Earth, shines at apparent magnitude 5.1, has spectral type F6 V and has an equilibrium temperature near 344 K.

Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.

How to see it

At apparent magnitude 5.1, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HD 33564 b 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 HD 33564 b is a common exoplanet

HD 33564 b scores 21 points on Spacedle's rarity scale, which places it in the common tier. Another 1 point would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Gas giant and Its star is visible to the naked eye — 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.