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Common exoplanet 21 EP

omi CrB b

RA 230.0351° · Dec 29.6160° · 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

  • It would float. It is less dense than water. Drop it in a big enough ocean and the whole world would bob on the surface.

What it actually is

  • What it is made of. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

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 5.5 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 May — 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. ≈ 4.9 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
0.761
diameter km
174759.94
discovery facility
Okayama Astrophysical Observatory
discovery method
Radial Velocity
discovery year
2012
dist ly
276.5421
eccentricity
0.105
eq temp k
947.65
host star teff
4769
insolation
135.8368
mag
5.5052
mass earth
355.9678
name
omi CrB b
orbital period days
187.01
radius earth
13.7
semi major au
0.699
spect
K0 III
sys num planets
1
sys num stars
1

About omi CrB b

omi CrB b is a common exoplanet. It lies about 276.5 light-years from Earth, shines at apparent magnitude 5.51, has spectral type K0 III and has an equilibrium temperature near 948 K.

Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

How to see it

At apparent magnitude 5.51, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, omi CrB 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 omi CrB b is a common exoplanet

omi CrB 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.