← Back to dex
Uncommon exoplanet 33 EP

psi1 Dra B b

RA 265.4926° · Dec 72.1557° · exoplanet

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 4 badges
33 pts · Uncommon
Uncommon 34 pts → Rare
  • Its star is visible to the naked eye +12
  • Two suns in its sky +12
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 33

1 more point to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Its star is visible to the naked eye · +12
  • Two suns in its sky · +12

Trivia

What it actually is

  • What it is made of. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

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 5.8 you can see it with your own eyes from a dark site.
  • Never sets. So far north that from Britain, Canada or northern Europe it never dips below the horizon — it is up every clear night of the year.
  • Best time of year. It stands highest in the middle of the night around June — 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. ≈ 1.3 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 115.7 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

density gcc
1.09
diameter km
172208.7
discovery facility
McDonald Observatory
discovery method
Radial Velocity
discovery year
2015
dist ly
74.0987
eccentricity
0.4
eq temp k
159.48
host star teff
6212
insolation
0.1079
mag
5.808
mass earth
486.2799
multi star system
yes
name
psi1 Dra B b
orbital period days
3117
radius earth
13.5
semi major au
4.43
spect
G0 V
sys num planets
1
sys num stars
3

About psi1 Dra B b

psi1 Dra B b is an uncommon exoplanet. It lies about 74.1 light-years from Earth, shines at apparent magnitude 5.81, has spectral type G0 V and has an equilibrium temperature near 159 K.

Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

How to see it

At apparent magnitude 5.81, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, psi1 Dra B 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 psi1 Dra B b is an uncommon exoplanet

psi1 Dra B b scores 33 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 1 point would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Gas giant, Its star is visible to the naked eye 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.