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Uncommon exoplanet 28 EP

K2-32 d

RA 252.4260° · Dec -19.5431° · exoplanet

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Score breakdown

· 4 badges
28 pts · Uncommon
Uncommon 34 pts → Rare
  • Two suns in its sky +12
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Sub-Neptune +5
Total score 28

6 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Multi-planet system · +6
  • Two suns in its sky · +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

  • Hugging its star. It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.
  • 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.
  • Crowded system. One of at least 4 planets orbiting its star.

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 12.3 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.
  • Best time of year. It stands highest in the middle of the night around June — that's when to go looking.

Properties

density gcc
0.87
diameter km
44442.6008
discovery facility
K2
discovery method
Transit
discovery year
2016
dist ly
514.2893
eccentricity
0.05
eq temp k
550
host star teff
5271
inclination
89.4
insolation
14.8
mag
12.304
mass earth
6.7
multi star system
yes
name
K2-32 d
orbital period days
31.717
radius earth
3.484
semi major au
0.1842
spect
G9 V
sys num planets
4
sys num stars
2

About K2-32 d

K2-32 d is an uncommon exoplanet. It lies about 514.3 light-years from Earth, shines at apparent magnitude 12.3, has spectral type G9 V and has an equilibrium temperature near 550 K.

It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.

How to see it

At apparent magnitude 12.3, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, K2-32 d 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 K2-32 d is an uncommon exoplanet

K2-32 d scores 28 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 6 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Sub-Neptune, Multi-planet system 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.