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Rare exoplanet 36 EP

BD+20 594 b

RA 53.6511° · Dec 20.5990° · exoplanet

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Score breakdown

· 4 badges
36 pts · Rare
Rare 50 pts → Epic
  • Denser than iron +18
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
  • Sub-Neptune +5
Total score 36

14 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Sub-Neptune · +5
  • Denser than iron · +18
  • Orbits a Sun-like star · +8

Trivia

Hard to believe

  • Denser than iron. It is packed tighter than solid iron — whatever it is made of, it is not ordinary rock.

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 10.8 you'll want a small backyard telescope.
  • 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 November — that's when to go looking.

Could we get there?

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

Properties

density gcc
7.89
diameter km
32886.3765
discovery facility
K2
discovery method
Transit
discovery year
2016
dist ly
585.3228
eccentricity
0
eq temp k
546
host star teff
5766
inclination
89.55
insolation
15.1513
mag
10.849
mass earth
22.2481
name
BD+20 594 b
orbital period days
41.6855
radius earth
2.5781
semi major au
0.241
spect
G
sys num planets
1
sys num stars
1

About BD+20 594 b

BD+20 594 b is a rare exoplanet. It lies about 585.3 light-years from Earth, shines at apparent magnitude 10.85, has spectral type G and has an equilibrium temperature near 546 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 10.85, a small backyard telescope will bring it into view.

Like any astronomical target, BD+20 594 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 BD+20 594 b is a rare exoplanet

BD+20 594 b scores 36 points on Spacedle's rarity scale, which places it in the rare tier. Another 14 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Sub-Neptune, Denser than iron 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.