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Uncommon exoplanet 29 EP

HD 164595 b

RA 270.1614° · Dec 29.5727° · exoplanet

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Score breakdown

· 4 badges
29 pts · Uncommon
Uncommon 34 pts → Rare
  • Two suns in its sky +12
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
  • Neptune-like +4
Total score 29

5 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Neptune-like · +4
  • Orbits a Sun-like star · +8
  • Two suns in its sky · +12

Trivia

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. 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 7.1 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • 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 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. ≈ 1.6 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
1.23
diameter km
53065.792
discovery facility
Haute-Provence Observatory
discovery method
Radial Velocity
discovery year
2015
dist ly
92.1521
eccentricity
0.088
eq temp k
589
host star teff
5790
insolation
19.6697
mag
7.086
mass earth
16.14
multi star system
yes
name
HD 164595 b
orbital period days
40
radius earth
4.16
semi major au
0.23
spect
G2 V
sys num planets
1
sys num stars
2

About HD 164595 b

HD 164595 b is an uncommon exoplanet. It lies about 92.2 light-years from Earth, shines at apparent magnitude 7.09, has spectral type G2 V and has an equilibrium temperature near 589 K.

It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.

How to see it

At apparent magnitude 7.09, it is an easy target for binoculars.

Like any astronomical target, HD 164595 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 164595 b is an uncommon exoplanet

HD 164595 b scores 29 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 5 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Neptune-like, 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.