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Rare exoplanet 45 EP

CWISEP J193518.59-154620.3 b

RA 293.8262° · Dec -15.7726° · exoplanet

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Score breakdown

· 4 badges
45 pts · Rare
Rare 50 pts → Epic
  • Found by JWST +20
  • Directly imaged +16
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 45

5 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Found by JWST · +20
  • Directly imaged · +16

Trivia

What makes it special

  • JWST find. Discovered by the James Webb Space Telescope, the largest telescope ever flown.

Hard to believe

  • Denser than iron. It is packed tighter than solid iron — whatever it is made of, it is not ordinary rock.

What it actually is

  • What it is made of. Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.

Sense of scale

  • In perspective. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.
  • Best time of year. It stands highest in the middle of the night around July — 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. ≈ 827.1 thousand years at Voyager 1's speed (17 km/s).

Properties

density gcc
14.9
diameter km
155625.64
discovery facility
James Webb Space Telescope (JWST)
discovery method
Imaging
discovery year
2025
dist ly
47.0643
eq temp k
390
mass earth
4926.3403
name
CWISEP J193518.59-154620.3 b
radius earth
12.2
semi major au
2.48
spect
Y
sys num planets
1
sys num stars
1

Nearby objects

About CWISEP J193518.59-154620.3 b

CWISEP J193518.59-154620.3 b is a rare exoplanet. It lies about 47.1 light-years from Earth, has spectral type Y, has an equilibrium temperature near 390 K and spans roughly 12.2 Earth radii.

Discovered by the James Webb Space Telescope, the largest telescope ever flown.

How to see it

Like any astronomical target, CWISEP J193518.59-154620.3 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 CWISEP J193518.59-154620.3 b is a rare exoplanet

CWISEP J193518.59-154620.3 b 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 4 science badges — Confirmed exoplanet, Gas giant, Found by JWST and Directly imaged — 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.