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Uncommon exoplanet 29 EP

HD 233832 b

RA 171.5197° · Dec 50.3763° · exoplanet

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Score breakdown

· 4 badges
29 pts · Uncommon
Uncommon 34 pts → Rare
  • Two suns in its sky +12
  • Frozen world +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 29

5 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Frozen world · +8
  • Two suns in its sky · +12

Trivia

What makes it special

  • Frozen world. A deep-frozen world, too far from its star's warmth for anything to stay liquid.

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 10.2 you'll want a small backyard telescope.
  • 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. ≈ 3.4 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
1.26
diameter km
172208.7
discovery facility
Roque de los Muchachos Observatory
discovery method
Radial Velocity
discovery year
2018
dist ly
191.5906
eccentricity
0.359
eq temp k
117.8
host star teff
4981
insolation
0.0376
mag
10.15
mass earth
565.7374
multi star system
yes
name
HD 233832 b
orbital period days
2058
radius earth
13.5
semi major au
2.827
spect
G0
sys num planets
1
sys num stars
2

About HD 233832 b

HD 233832 b is an uncommon exoplanet. It lies about 191.6 light-years from Earth, shines at apparent magnitude 10.15, has spectral type G0 and has an equilibrium temperature near 118 K.

A deep-frozen world, too far from its star's warmth for anything to stay liquid.

How to see it

At apparent magnitude 10.15, a small backyard telescope will bring it into view.

Like any astronomical target, HD 233832 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 233832 b is an uncommon exoplanet

HD 233832 b scores 29 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 5 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Gas giant, Frozen world 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.