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Uncommon exoplanet 32 EP

GJ 674 b

RA 262.1700° · Dec -46.8990° · exoplanet

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Score breakdown

· 4 badges
32 pts · Uncommon
Uncommon 34 pts → Rare
  • Nearby (<25 ly) +12
  • Tidally locked +10
  • Confirmed exoplanet +5
  • Sub-Neptune +5
Total score 32

2 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Nearby (<25 ly) · +12
  • Sub-Neptune · +5
  • Tidally locked · +10

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. 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. 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 9.4 you'll want a small backyard telescope.
  • 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. ≈ 260.7 thousand years at Voyager 1's speed (17 km/s).

Properties

density gcc
1.65
diameter km
42478.146
discovery facility
La Silla Observatory
discovery method
Radial Velocity
discovery year
2007
dist ly
14.8367
eccentricity
0.2
eq temp k
530.8
host star teff
3600
insolation
10.5165
mag
9.38
mass earth
11.09
name
GJ 674 b
orbital period days
4.6938
radius earth
3.33
semi major au
0.039
spect
M2.5
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About GJ 674 b

GJ 674 b is an uncommon exoplanet. It lies about 14.8 light-years from Earth, shines at apparent magnitude 9.38, has spectral type M2.5 and has an equilibrium temperature near 531 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 9.38, a small backyard telescope will bring it into view.

Like any astronomical target, GJ 674 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 GJ 674 b is an uncommon exoplanet

GJ 674 b scores 32 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 2 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Nearby (<25 ly), Sub-Neptune and Tidally locked — 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.