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Rare exoplanet 40 EP

Kepler-445 d

RA 298.7363° · Dec 46.4991° · exoplanet

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Score breakdown

· 6 badges
40 pts · Rare
Rare 50 pts → Epic
  • Tidally locked +10
  • Super-Earth +8
  • Orbits a red dwarf +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Found by Kepler +3
Total score 40

10 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Super-Earth · +8
  • Tidally locked · +10
  • Multi-planet system · +6
  • Found by Kepler · +3
  • Orbits a red dwarf · +8

Trivia

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 3 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 18.2 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.

Could we get there?

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

Properties

density gcc
5.91
diameter km
15945.25
discovery facility
Kepler
discovery method
Transit
discovery year
2015
dist ly
414.8737
eccentricity
0
eq temp k
305
host star teff
3157
inclination
89.61
insolation
4.314
mag
18.19
mass earth
2.1
name
Kepler-445 d
orbital period days
8.1527
radius earth
1.25
semi major au
0.0439
spect
M4
sys num planets
3
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About Kepler-445 d

Kepler-445 d is a rare exoplanet. It lies about 414.9 light-years from Earth, shines at apparent magnitude 18.19, has spectral type M4 and has an equilibrium temperature near 305 K.

It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.

How to see it

At apparent magnitude 18.19, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Kepler-445 d 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-445 d is a rare exoplanet

Kepler-445 d scores 40 points on Spacedle's rarity scale, which places it in the rare tier. Another 10 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Super-Earth, Tidally locked, Multi-planet system, Found by Kepler and Orbits a red dwarf — 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.