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Uncommon exoplanet 22 EP

KOI-4777.01

RA 287.2621° · Dec 42.0322° · exoplanet

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Score breakdown

· 3 badges
22 pts · Uncommon
Uncommon 34 pts → Rare
  • Ultra-short period +14
  • Confirmed exoplanet +5
  • Found by Kepler +3
Total score 22

12 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Ultra-short period · +14
  • Found by Kepler · +3

Trivia

Hard to believe

  • A year in a day. Its entire year is over in 9.9 hours. Birthdays here would come round faster than meals.

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.

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 16.4 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.

Getting there

  • Aboard Voyager 1. ≈ 9.9 million years at Voyager 1's speed (17 km/s).

Properties

diameter km
6505.662
discovery facility
Kepler
discovery method
Transit
discovery year
2022
dist ly
561.7874
eccentricity
0
eq temp k
1180
host star teff
3515
inclination
87
insolation
320
mag
16.413
mass earth
99.2
name
KOI-4777.01
orbital period days
0.412
radius earth
0.51
semi major au
0.008
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About KOI-4777.01

KOI-4777.01 is an uncommon exoplanet. It lies about 561.8 light-years from Earth, shines at apparent magnitude 16.41, has an equilibrium temperature near 1,180 K and spans roughly 0.51 Earth radii.

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 16.41, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, KOI-4777.01 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 KOI-4777.01 is an uncommon exoplanet

KOI-4777.01 scores 22 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 12 points would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Ultra-short period 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.