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Rare exoplanet 47 EP

EPIC 220554210 c

RA 13.4322° · Dec 7.9953° · exoplanet

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Score breakdown

· 6 badges
47 pts · Rare
Rare 50 pts → Epic
  • Ultra-short period +14
  • Super-Earth +8
  • Orbits a Sun-like star +8
  • Distant (over 1,000 light-years) +6
  • Multi-planet system +6
  • Confirmed exoplanet +5
Total score 47

3 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Super-Earth · +8
  • Ultra-short period · +14
  • Multi-planet system · +6
  • Orbits a Sun-like star · +8

Trivia

Hard to believe

  • A year in a day. Its entire year is over in 16.9 hours. Birthdays here would come round faster than meals.

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.
  • 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 14.2 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 October — that's when to go looking.

Properties

density gcc
4.28
diameter km
20409.92
discovery facility
K2
discovery method
Transit
discovery year
2019
dist ly
1618.6764
host star teff
5499
inclination
91.3
mag
14.21
mass earth
3.19
name
EPIC 220554210 c
orbital period days
0.7053
radius earth
1.6
sys num planets
2
sys num stars
1

Nearby objects

About EPIC 220554210 c

EPIC 220554210 c is a rare exoplanet. It lies about 1,618.7 light-years from Earth, shines at apparent magnitude 14.21, spans roughly 1.6 Earth radii and weighs about 3.19 Earth masses.

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 14.21, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, EPIC 220554210 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 EPIC 220554210 c is a rare exoplanet

EPIC 220554210 c scores 47 points on Spacedle's rarity scale, which places it in the rare tier. Another 3 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Super-Earth, Ultra-short period, Multi-planet system and Orbits a Sun-like star — 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.