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Rare exoplanet 47 EP

Kepler-48 f

RA 299.1393° · Dec 40.9489° · exoplanet

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Score breakdown

· 6 badges
47 pts · Rare
Rare 50 pts → Epic
  • Richly packed system +14
  • Long-period world +10
  • Frozen world +8
  • Distant (over 1,000 light-years) +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 47

3 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4
  • Frozen world · +8
  • Long-period world · +10
  • Richly packed system · +14

Trivia

What makes it special

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

Hard to believe

  • It would float. It is less dense than water. Drop it in a big enough ocean and the whole world would bob on the surface.

What it actually is

  • What it is made of. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.
  • Crowded system. One of at least 5 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 13.2 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 July — that's when to go looking.

Properties

density gcc
0.624
diameter km
176035.56
discovery facility
W. M. Keck Observatory
discovery method
Radial Velocity
discovery year
2023
dist ly
1000.4444
eccentricity
0.0153
eq temp k
95.68
host star teff
5190
insolation
0.0157
mag
13.174
mass earth
298.581
name
Kepler-48 f
orbital period days
5219.6819
radius earth
13.8
semi major au
5.7192
sys num planets
5
sys num stars
1

About Kepler-48 f

Kepler-48 f is a rare exoplanet. It lies about 1,000.4 light-years from Earth, shines at apparent magnitude 13.17, has an equilibrium temperature near 96 K and spans roughly 13.8 Earth radii.

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

How to see it

At apparent magnitude 13.17, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Kepler-48 f 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 Kepler-48 f is a rare exoplanet

Kepler-48 f 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), Gas giant, Frozen world, Long-period world and Richly packed system — 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.