← Back to dex
Common exoplanet 17 EP

HD 167677 b

RA 274.2068° · Dec -11.4068° · exoplanet

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

Computing the sky for your location…

Score breakdown

· 3 badges
17 pts · Common
Common 22 pts → Uncommon
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 17

5 more points to reach Uncommon.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Orbits a Sun-like star · +8

Trivia

What it actually is

  • 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.

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 8.9 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • Southern sky. It rides the southern half of the sky — an easier target the further south 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. ≈ 3.1 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 276.7 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

density gcc
2.16
diameter km
168381.84
discovery facility
Multiple Facilities
discovery method
Radial Velocity
discovery year
2023
dist ly
177.1869
eccentricity
0.182
eq temp k
151.9
host star teff
5474
inclination
28.7
insolation
0.0891
mag
8.9
mass earth
905.811
name
HD 167677 b
orbital period days
1820
radius earth
13.2
semi major au
2.877
spect
G5 V
sys num planets
1
sys num stars
1

About HD 167677 b

HD 167677 b is a common exoplanet. It lies about 177.2 light-years from Earth, shines at apparent magnitude 8.9, has spectral type G5 V and has an equilibrium temperature near 152 K.

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.

How to see it

At apparent magnitude 8.9, it is an easy target for binoculars.

Like any astronomical target, HD 167677 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 167677 b is a common exoplanet

HD 167677 b scores 17 points on Spacedle's rarity scale, which places it in the common tier. Another 5 points would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Gas giant and Orbits a Sun-like star — 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.