← Back to dex
Uncommon exoplanet 33 EP

WASP-186 b

RA 18.9953° · Dec 21.6169° · exoplanet

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 4 badges
33 pts · Uncommon
Uncommon 34 pts → Rare
  • Lava world +14
  • Tidally locked +10
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 33

1 more point to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Lava world · +14
  • Tidally locked · +10

Trivia

What makes it special

  • Lava world. Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

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. Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.

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 10.8 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 October — that's when to go looking.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Properties

density gcc
3.821
diameter km
158712.5128
discovery facility
SuperWASP
discovery method
Transit
discovery year
2020
dist ly
908.3901
eccentricity
0.33
eq temp k
1378.4
host star teff
6361
inclination
83.59
insolation
853.1355
mag
10.81
mass earth
1341.2426
name
WASP-186 b
orbital period days
5.0268
radius earth
12.442
semi major au
0.06
spect
F
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About WASP-186 b

WASP-186 b is an uncommon exoplanet. It lies about 908.4 light-years from Earth, shines at apparent magnitude 10.81, has spectral type F and has an equilibrium temperature near 1,378 K.

Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

How to see it

At apparent magnitude 10.81, a small backyard telescope will bring it into view.

Like any astronomical target, WASP-186 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 WASP-186 b is an uncommon exoplanet

WASP-186 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, Lava world and Tidally locked — 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.