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Rare exoplanet 45 EP

LkCa 15 c

RA 69.8242° · Dec 22.3509° · exoplanet

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Score breakdown

· 5 badges
45 pts · Rare
Rare 50 pts → Epic
  • Directly imaged +16
  • Disputed — it may not be there at all +10
  • Frozen world +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
Total score 45

5 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Frozen world · +8
  • Multi-planet system · +6
  • Directly imaged · +16
  • Disputed — it may not be there at all · +10

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

  • 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 12 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • 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 November — 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. ≈ 9.1 million years at Voyager 1's speed (17 km/s).

Properties

controversial
yes
discovery facility
Large Binocular Telescope Observatory
discovery method
Imaging
discovery year
2015
dist ly
515.8222
eq temp k
59.45
host star teff
4194
inclination
50
insolation
0.0019
mag
12.025
name
LkCa 15 c
semi major au
18.6
sys num planets
2
sys num stars
1

About LkCa 15 c

LkCa 15 c is a rare exoplanet. It lies about 515.8 light-years from Earth, shines at apparent magnitude 12.03, has an equilibrium temperature near 59 K and belongs to a system of 2 known planets.

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

How to see it

At apparent magnitude 12.03, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, LkCa 15 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 LkCa 15 c is a rare exoplanet

LkCa 15 c scores 45 points on Spacedle's rarity scale, which places it in the rare tier. Another 5 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Frozen world, Multi-planet system, Directly imaged and Disputed — it may not be there at all — 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.