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Common exoplanet 21 EP

K2-169 b

RA 337.0442° · Dec -14.5993° · exoplanet

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Score breakdown

· 3 badges
21 pts · Common
Common 22 pts → Uncommon
  • Super-Earth +8
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
Total score 21

1 more point to reach Uncommon.

Badges

  • Confirmed exoplanet · +5
  • Super-Earth · +8
  • 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. Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.

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 12.2 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.
  • Best time of year. It stands highest in the middle of the night around August — 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. ≈ 13.5 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
5.75
diameter km
16242.2999
discovery facility
K2
discovery method
Transit
discovery year
2018
dist ly
769.2944
host star teff
5548
inclination
87.8366
mag
12.23
mass earth
2.16
name
K2-169 b
orbital period days
6.3808
radius earth
1.2733
sys num planets
1
sys num stars
1

About K2-169 b

K2-169 b is a common exoplanet. It lies about 769.3 light-years from Earth, shines at apparent magnitude 12.23, spans roughly 1.27 Earth radii and weighs about 2.16 Earth masses.

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

Like any astronomical target, K2-169 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 K2-169 b is a common exoplanet

K2-169 b scores 21 points on Spacedle's rarity scale, which places it in the common tier. Another 1 point would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Super-Earth 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.