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Uncommon exoplanet 33 EP

gam Cep b

RA 354.8358° · Dec 77.6331° · exoplanet

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Score breakdown

· 4 badges
33 pts · Uncommon
Uncommon 34 pts → Rare
  • Its star is visible to the naked eye +12
  • Two suns in its sky +12
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 33

1 more point to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Its star is visible to the naked eye · +12
  • Two suns in its sky · +12

Trivia

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 3.2 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 September — 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. ≈ 808.3 thousand years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 71.8 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

density gcc
5.63
diameter km
162003.74
discovery facility
Multiple Observatories
discovery method
Radial Velocity
discovery year
2003
dist ly
45.9958
eccentricity
0.15
eq temp k
343.48
host star teff
4775
insolation
2.6076
mag
3.2301
mass earth
2097.6675
multi star system
yes
name
gam Cep b
orbital period days
913
radius earth
12.7
semi major au
2.13
spect
K1 III-IV
sys num planets
1
sys num stars
2

About gam Cep b

gam Cep b is an uncommon exoplanet. It lies about 46 light-years from Earth, shines at apparent magnitude 3.23, has spectral type K1 III-IV and has an equilibrium temperature near 343 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 3.23, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, gam Cep 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 gam Cep b is an uncommon exoplanet

gam Cep b scores 33 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 1 point would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Gas giant, Its star is visible to the naked eye and Two suns in its sky — 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.