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Rare exoplanet 47 EP

GU Psc b

RA 18.1465° · Dec 17.0650° · exoplanet

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Score breakdown

· 5 badges
47 pts · Rare
Rare 50 pts → Epic
  • Directly imaged +16
  • Orbits beyond Neptune's distance +12
  • Hot Jupiter +10
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 47

3 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Hot Jupiter · +10
  • Directly imaged · +16
  • Orbits beyond Neptune's distance · +12

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 14.1 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • 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 October — 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. ≈ 2.7 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 242.2 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

density gcc
6.92
diameter km
180870.1598
discovery facility
Gemini Observatory
discovery method
Imaging
discovery year
2014
dist ly
155.0875
eq temp k
1050
host star teff
4031.81
insolation
0
mag
14.146
mass earth
3591.3
name
GU Psc b
radius earth
14.179
semi major au
2000
spect
M3
sys num planets
1
sys num stars
1

About GU Psc b

GU Psc b is a rare exoplanet. It lies about 155.1 light-years from Earth, shines at apparent magnitude 14.15, has spectral type M3 and has an equilibrium temperature near 1,050 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 14.15, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, GU Psc 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 GU Psc b is a rare exoplanet

GU Psc b scores 47 points on Spacedle's rarity scale, which places it in the rare tier. Another 3 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Gas giant, Hot Jupiter, Directly imaged and Orbits beyond Neptune's distance — 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.