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Epic exoplanet 55 EP

Kepler-1540 b

RA 283.3446° · Dec 41.2018° · exoplanet

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Score breakdown

· 5 badges
55 pts · Epic
Epic 78 pts → Anomaly
  • In the habitable zone +30
  • Two suns in its sky +12
  • Confirmed exoplanet +5
  • Sub-Neptune +5
  • Found by Kepler +3
Total score 55

23 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • In the habitable zone · +30
  • Sub-Neptune · +5
  • Found by Kepler · +3
  • Two suns in its sky · +12

Trivia

What makes it special

  • Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

What it actually is

  • What it is made of. Too light to be solid rock and too heavy to be all gas: most likely a deep global ocean or a thick steamy envelope over a rocky core.
  • What the zone means. The habitable zone is only about temperature: it is the band where liquid water could survive on a surface. It is a promising address, not evidence of anything living.

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 14.4 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
2.41
diameter km
31762.938
discovery facility
Kepler
discovery method
Transit
discovery year
2016
dist ly
798.9517
eccentricity
0
eq temp k
266
habitable zone
yes
host star teff
4540
inclination
89.82
insolation
0.849
mag
14.429
mass earth
6.76
multi star system
yes
name
Kepler-1540 b
orbital period days
125.4131
radius earth
2.49
semi major au
0.4426
sys num planets
1
sys num stars
2

About Kepler-1540 b

Kepler-1540 b is an epic exoplanet. It lies about 799 light-years from Earth, shines at apparent magnitude 14.43, has an equilibrium temperature near 266 K and spans roughly 2.49 Earth radii.

Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

How to see it

At apparent magnitude 14.43, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Kepler-1540 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-1540 b is an epic exoplanet

Kepler-1540 b scores 55 points on Spacedle's rarity scale, which places it in the epic tier. Another 23 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, In the habitable zone, Sub-Neptune, Found by Kepler and Two suns in its sky — 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.