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Anomaly exoplanet 89 EP

EPIC 220674823 b

RA 13.0800° · Dec 10.7947° · exoplanet

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Score breakdown

· 8 badges
89 pts · Anomaly
Anomaly 120 pts → Mythic
  • Ultra-hot Jupiter +26
  • Denser than iron +18
  • Ultra-short period +14
  • Super-Earth +8
  • Orbits a Sun-like star +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Blasted by starlight +4
Total score 89

31 more points to reach Mythic.

Badges

  • Confirmed exoplanet · +5
  • Super-Earth · +8
  • Ultra-hot Jupiter · +26
  • Ultra-short period · +14
  • Denser than iron · +18
  • Multi-planet system · +6
  • Blasted by starlight · +4
  • Orbits a Sun-like star · +8

Trivia

What makes it special

  • Ultra-hot Jupiter. So hot that iron vaporises on the dayside, blows around to the night side and rains back down as molten metal.

Hard to believe

  • Denser than iron. It is packed tighter than solid iron — whatever it is made of, it is not ordinary rock.
  • A year in a day. Its entire year is over in 13.7 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. Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.
  • 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 12.1 it is far too faint for the eye: this one belongs to cameras and long exposures.

Properties

density gcc
10.6848
diameter km
20486.4572
discovery facility
K2
discovery method
Transit
discovery year
2016
dist ly
797.745
eccentricity
0
eq temp k
2324
host star teff
5578
inclination
88.5
insolation
4467
mag
12.101
mass earth
7.54
name
EPIC 220674823 b
orbital period days
0.5713
radius earth
1.606
semi major au
0.0132
spect
G5 V
sys num planets
2
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About EPIC 220674823 b

EPIC 220674823 b is an anomaly exoplanet. It lies about 797.7 light-years from Earth, shines at apparent magnitude 12.1, has spectral type G5 V and has an equilibrium temperature near 2,324 K.

So hot that iron vaporises on the dayside, blows around to the night side and rains back down as molten metal.

How to see it

At apparent magnitude 12.1, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, EPIC 220674823 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 EPIC 220674823 b is an anomaly exoplanet

EPIC 220674823 b scores 89 points on Spacedle's rarity scale, which places it in the anomaly tier. Another 31 points would lift it into a rarer tier.

That score comes from 8 science badges — Confirmed exoplanet, Super-Earth, Ultra-hot Jupiter, Ultra-short period, Denser than iron, Multi-planet system, Blasted by starlight 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.