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Common exoplanet 16 EP

Kepler-441 b

RA 284.5670° · Dec 49.0127° · exoplanet

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Score breakdown

· 3 badges
16 pts · Common
Common 22 pts → Uncommon
  • Super-Earth +8
  • Confirmed exoplanet +5
  • Found by Kepler +3
Total score 16

6 more points to reach Uncommon.

Badges

  • Confirmed exoplanet · +5
  • Super-Earth · +8
  • Found by Kepler · +3

Trivia

What it actually is

  • 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.

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 15.6 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.

Could we get there?

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

Getting there

  • Aboard Voyager 1. ≈ 15.4 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 1.4 million years even at the Parker Solar Probe's 192 km/s.

Properties

density gcc
4.15
diameter km
20920.168
discovery facility
Kepler
discovery method
Transit
discovery year
2015
dist ly
874.1079
eccentricity
0.1
eq temp k
189
host star teff
4340
inclination
89.97
insolation
0.21
mag
15.567
mass earth
3.33
name
Kepler-441 b
orbital period days
207.2482
radius earth
1.64
semi major au
0.64
sys num planets
1
sys num stars
1

About Kepler-441 b

Kepler-441 b is a common exoplanet. It lies about 874.1 light-years from Earth, shines at apparent magnitude 15.57, has an equilibrium temperature near 189 K and spans roughly 1.64 Earth radii.

Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.

How to see it

At apparent magnitude 15.57, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Kepler-441 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 Kepler-441 b is a common exoplanet

Kepler-441 b scores 16 points on Spacedle's rarity scale, which places it in the common tier. Another 6 points would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Super-Earth and Found by Kepler — 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.