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Common exoplanet 16 EP

K2-5 c

RA 169.3035° · Dec -1.8778° · exoplanet

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Score breakdown

· 3 badges
16 pts · Common
Common 22 pts → Uncommon
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Sub-Neptune +5
Total score 16

6 more points to reach Uncommon.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Multi-planet system · +6

Trivia

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. Too light to be solid rock and too heavy to be all gas: most likely a deep global ocean or a thick steamy envelope over a rocky core.
  • Crowded system. One of at least 2 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 15 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • 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
2.73
diameter km
28829.012
discovery facility
K2
discovery method
Transit
discovery year
2015
dist ly
661.9108
eq temp k
456
host star teff
3930
inclination
86.95
insolation
10.2
mag
14.974
mass earth
5.73
name
K2-5 c
orbital period days
10.9324
radius earth
2.26
semi major au
0.0818
spect
K7.5 V
sys num planets
2
sys num stars
1

About K2-5 c

K2-5 c is a common exoplanet. It lies about 661.9 light-years from Earth, shines at apparent magnitude 14.97, has spectral type K7.5 V and has an equilibrium temperature near 456 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 14.97, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, K2-5 c 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 K2-5 c is a common exoplanet

K2-5 c scores 16 points on Spacedle's rarity scale, which places it in the common tier. Another 6 points would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Sub-Neptune and Multi-planet system — 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.