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Uncommon exoplanet 33 EP

KPS-1 b

RA 165.1672° · Dec 64.9638° · exoplanet

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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. 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 13 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Never sets. So far north that from Britain, Canada or northern Europe it never dips below the horizon — it is up every clear night of the year.
  • 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.

Properties

density gcc
1.31
diameter km
147273.7732
discovery facility
Acton Sky Portal Observatory
discovery method
Transit
discovery year
2018
dist ly
856.8314
eccentricity
0
eq temp k
1459
host star teff
5165
inclination
83.2
insolation
729
mag
12.97
mass earth
346.4347
name
KPS-1 b
orbital period days
1.7063
radius earth
11.5453
semi major au
0.0269
spect
K1 V
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About KPS-1 b

KPS-1 b is an uncommon exoplanet. It lies about 856.8 light-years from Earth, shines at apparent magnitude 12.97, has spectral type K1 V and has an equilibrium temperature near 1,459 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 12.97, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, KPS-1 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 KPS-1 b is an uncommon exoplanet

KPS-1 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.