← Back to dex
Uncommon exoplanet 26 EP

HD 154672 b

RA 257.5207° · Dec -56.4498° · exoplanet

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

Computing the sky for your location…

Score breakdown

· 4 badges
26 pts · Uncommon
Uncommon 34 pts → Rare
  • Eccentric orbit +9
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 26

8 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Eccentric orbit · +9
  • Orbits a Sun-like star · +8

Trivia

What it actually is

  • What it is made of. Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.

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 8.2 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. ≈ 3.6 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 321.1 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

density gcc
4.47
diameter km
163279.36
discovery facility
Las Campanas Observatory
discovery method
Radial Velocity
discovery year
2008
dist ly
205.6361
eccentricity
0.61
eq temp k
410.76
host star teff
5743
insolation
5.0225
mag
8.21
mass earth
1706.7471
name
HD 154672 b
orbital period days
163.94
radius earth
12.8
semi major au
0.6
spect
G3 IV
sys num planets
1
sys num stars
1

About HD 154672 b

HD 154672 b is an uncommon exoplanet. It lies about 205.6 light-years from Earth, shines at apparent magnitude 8.21, has spectral type G3 IV and has an equilibrium temperature near 411 K.

Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.

How to see it

At apparent magnitude 8.21, it is an easy target for binoculars.

Like any astronomical target, HD 154672 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 154672 b is an uncommon exoplanet

HD 154672 b scores 26 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 8 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Gas giant, Eccentric orbit 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.