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Epic exoplanet 58 EP

HIP 38594 b

RA 118.5439° · Dec -25.3023° · exoplanet

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Score breakdown

· 5 badges
58 pts · Epic
Epic 78 pts → Anomaly
  • In the habitable zone +30
  • Two suns in its sky +12
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Sub-Neptune +5
Total score 58

20 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • In the habitable zone · +30
  • Sub-Neptune · +5
  • Multi-planet system · +6
  • Two suns in its sky · +12

Trivia

What makes it special

  • Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

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. Too light to be solid rock and too heavy to be all gas: most likely a deep global ocean or a thick steamy envelope over a rocky core.
  • What the zone means. The habitable zone is only about temperature: it is the band where liquid water could survive on a surface. It is a promising address, not evidence of anything living.
  • Crowded system. One of at least 2 planets orbiting its star.

Sense of scale

  • In perspective. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • How to spot it. At magnitude 9.8 you'll want a small backyard telescope.
  • Southern sky. It rides the southern half of the sky — an easier target the further south you are.

Properties

density gcc
2.09
diameter km
35334.674
discovery facility
Multiple Observatories
discovery method
Radial Velocity
discovery year
2020
dist ly
58.0186
eccentricity
0.17
eq temp k
308.29
habitable zone
yes
host star teff
4086.3
insolation
1.3216
mag
9.75
mass earth
8.1
multi star system
yes
name
HIP 38594 b
orbital period days
60.722
radius earth
2.77
semi major au
0.256
spect
M0
sys num planets
2
sys num stars
2

About HIP 38594 b

HIP 38594 b is an epic exoplanet. It lies about 58 light-years from Earth, shines at apparent magnitude 9.75, has spectral type M0 and has an equilibrium temperature near 308 K.

Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

How to see it

At apparent magnitude 9.75, a small backyard telescope will bring it into view.

Like any astronomical target, HIP 38594 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 HIP 38594 b is an epic exoplanet

HIP 38594 b scores 58 points on Spacedle's rarity scale, which places it in the epic tier. Another 20 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, In the habitable zone, Sub-Neptune, Multi-planet system and Two suns in its sky — 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.