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Uncommon exoplanet 33 EP

11 Com b

RA 185.1788° · Dec 17.7933° · 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

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. 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 4.7 you can see it with your own eyes from a dark site.
  • Northern sky. It rides the northern half of the sky — an easier target the further north 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. ≈ 5.3 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
14.9
diameter km
155625.64
discovery facility
Xinglong Station
discovery method
Radial Velocity
discovery year
2007
dist ly
303.9272
eccentricity
0.238
eq temp k
803.26
host star teff
4874
insolation
68.5387
mag
4.7231
mass earth
4914.8985
multi star system
yes
name
11 Com b
orbital period days
323.21
radius earth
12.2
semi major au
1.178
spect
G8 III
sys num planets
1
sys num stars
2

About 11 Com b

11 Com b is an uncommon exoplanet. It lies about 303.9 light-years from Earth, shines at apparent magnitude 4.72, has spectral type G8 III and has an equilibrium temperature near 803 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 4.72, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, 11 Com 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 11 Com b is an uncommon exoplanet

11 Com 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.