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Rare exoplanet 47 EP

HD 190360 b

RA 300.9092° · Dec 29.8945° · exoplanet

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Score breakdown

· 6 badges
47 pts · Rare
Rare 50 pts → Epic
  • Its star is visible to the naked eye +12
  • Two suns in its sky +12
  • Orbits a Sun-like star +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 47

3 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Multi-planet system · +6
  • Its star is visible to the naked eye · +12
  • Orbits a Sun-like star · +8
  • 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.
  • Crowded system. One of at least 3 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 5.7 you can see it with your own eyes from a dark site.
  • 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 July — 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. ≈ 917.4 thousand years at Voyager 1's speed (17 km/s).

Properties

density gcc
1.2
diameter km
172208.7
discovery facility
Haute-Provence Observatory
discovery method
Radial Velocity
discovery year
2003
dist ly
52.2075
eccentricity
0.3342
eq temp k
150
host star teff
5560
inclination
71
insolation
0.0741
mag
5.738
mass earth
537
multi star system
yes
name
HD 190360 b
orbital period days
2887.5
radius earth
13.5
semi major au
3.965
spect
G7 IV-V
sys num planets
3
sys num stars
2

About HD 190360 b

HD 190360 b is a rare exoplanet. It lies about 52.2 light-years from Earth, shines at apparent magnitude 5.74, has spectral type G7 IV-V and has an equilibrium temperature near 150 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 5.74, it can be glimpsed with the unaided eye under dark skies.

Like any astronomical target, HD 190360 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 190360 b is a rare exoplanet

HD 190360 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 6 science badges — Confirmed exoplanet, Gas giant, Multi-planet system, Its star is visible to the naked eye, Orbits a Sun-like star 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.