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Anomaly exoplanet 75 EP

K2-223 b

RA 185.3062° · Dec -10.2821° · exoplanet

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Score breakdown

· 6 badges
75 pts · Anomaly
Anomaly 95 pts → Mythic
  • Ultra-hot Jupiter +26
  • Earth-sized +16
  • Ultra-short period +14
  • Blasted by starlight +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
Total score 75

20 more points to reach Mythic.

Badges

  • Confirmed exoplanet · +5
  • Earth-sized · +16
  • Ultra-hot Jupiter · +26
  • Ultra-short period · +14
  • Multi-planet system · +6
  • Blasted by starlight · +8

Trivia

What makes it special

  • Ultra-hot Jupiter. So hot that iron vaporises and rains back down as molten metal.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Getting there

  • Aboard Voyager 1. ≈ 11.4 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 1 million years even at the Parker Solar Probe's 192 km/s.
  • At 10% light speed. ≈ 6478 years in a starship at a tenth of light speed.
  • Distance. 648 light-years from Earth.

Look-back time

  • Look-back time. The light you'd see left around the year 1378.

Saying hello

  • Say hello. A radio message and its reply would take 1296 years round-trip.

Standing on it

  • A year here. A full year lasts just 0.5 Earth days.

By the numbers

  • Size. Around 89% of Earth's width.
  • Mass. About 0.6× the mass of Earth.
  • Your weight. You'd weigh about 0.8× your Earth weight standing here.
  • Temperature. Around 2271 K — hot enough to vaporise iron.

How we found it

  • Discovery. Found by K2 using the transit method.

Cosmic context

  • Crowded system. One of at least 2 planets orbiting its star.

Properties

density gcc
4.99
discovery facility
K2
discovery method
Transit
dist ly
647.7589
eq temp k
2271
insolation
5714.3505
mass earth
0.64
name
K2-223 b
orbital period days
0.5056
radius earth
0.89
sys num planets
2

About K2-223 b

K2-223 b is an anomaly exoplanet. It lies about 647.8 light-years from Earth, has an equilibrium temperature near 2,271 K, spans roughly 0.89 Earth radii and weighs about 0.64 Earth masses.

So hot that iron vaporises and rains back down as molten metal.

How to see it

Like any astronomical target, K2-223 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 K2-223 b is an anomaly exoplanet

K2-223 b scores 75 points on Spacedle's rarity scale, which places it in the anomaly tier. Another 20 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Earth-sized, Ultra-hot Jupiter, Ultra-short period, Multi-planet system and Blasted by starlight — 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.

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Sky imagery and survey data courtesy of Aladin Lite & CDS, Strasbourg. Object data from the NASA Exoplanet Archive, JPL Small-Body Database, and the ATNF Pulsar Catalogue.