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Common exoplanet 18 EP

EPIC 229004835 b

RA 186.4860° · Dec -1.4047° · exoplanet

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Score breakdown

· 3 badges
18 pts · Common
Common 22 pts → Uncommon
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
  • Sub-Neptune +5
Total score 18

4 more points to reach Uncommon.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Orbits a Sun-like star · +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. 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 10.2 you'll want a small backyard telescope.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • Best time of year. It stands highest in the middle of the night around March — 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. ≈ 7 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
4.49
diameter km
29747.4584
discovery facility
K2
discovery method
Transit
discovery year
2023
dist ly
397.8157
eccentricity
0.23
eq temp k
804
host star teff
5868
inclination
88.08
insolation
69.7
mag
10.23
mass earth
10.4
name
EPIC 229004835 b
orbital period days
16.1411
radius earth
2.332
semi major au
0.1237
sys num planets
1
sys num stars
1

About EPIC 229004835 b

EPIC 229004835 b is a common exoplanet. It lies about 397.8 light-years from Earth, shines at apparent magnitude 10.23, has an equilibrium temperature near 804 K and spans roughly 2.33 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 10.23, a small backyard telescope will bring it into view.

Like any astronomical target, EPIC 229004835 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 EPIC 229004835 b is a common exoplanet

EPIC 229004835 b scores 18 points on Spacedle's rarity scale, which places it in the common tier. Another 4 points would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Sub-Neptune and Orbits a Sun-like star — 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.