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Common exoplanet 15 EP

HD 233604 b

RA 137.4535° · Dec 53.5682° · exoplanet

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Score breakdown

· 3 badges
15 pts · Common
Common 22 pts → Uncommon
  • Distant (over 1,000 light-years) +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 15

7 more points to reach Uncommon.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4

Trivia

What it actually is

  • 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 10.3 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 February — that's when to go looking.

Could we get there?

  • Verdict. Impossible with our current technology — and the next millennium of it.

Getting there

  • Aboard Voyager 1. ≈ 48.5 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 4.3 million years even at the Parker Solar Probe's 192 km/s.

Properties

density gcc
5.61
diameter km
162003.74
discovery facility
McDonald Observatory
discovery method
Radial Velocity
discovery year
2013
dist ly
2762.7305
eccentricity
0.05
eq temp k
882.5
host star teff
4791
insolation
100.7764
mag
10.291
mass earth
2089.644
name
HD 233604 b
orbital period days
192
radius earth
12.7
semi major au
0.747
spect
K5
sys num planets
1
sys num stars
1

About HD 233604 b

HD 233604 b is a common exoplanet. It lies about 2,762.7 light-years from Earth, shines at apparent magnitude 10.29, has spectral type K5 and has an equilibrium temperature near 883 K.

Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.

How to see it

At apparent magnitude 10.29, a small backyard telescope will bring it into view.

Like any astronomical target, HD 233604 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 HD 233604 b is a common exoplanet

HD 233604 b scores 15 points on Spacedle's rarity scale, which places it in the common tier. Another 7 points would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Distant (over 1,000 light-years) and Gas giant — 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.