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Uncommon exoplanet 33 EP

Qatar-1 b

RA 303.3819° · Dec 65.1623° · exoplanet

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Score breakdown

· 4 badges
33 pts · Uncommon
Uncommon 34 pts → Rare
  • Lava world +14
  • Tidally locked +10
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 33

1 more point to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Lava world · +14
  • Tidally locked · +10

Trivia

What makes it special

  • Lava world. Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

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. 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 12.7 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Never sets. So far north that from Britain, Canada or northern Europe it never dips below the horizon — it is up every clear night of the year.
  • 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.

Properties

density gcc
1.076
diameter km
163430.9929
discovery facility
Qatar
discovery method
Transit
discovery year
2010
dist ly
605.3945
eccentricity
0
eq temp k
1418
host star teff
5013
inclination
84.08
insolation
382.328
mag
12.692
mass earth
411.272
name
Qatar-1 b
orbital period days
1.42
radius earth
12.8119
semi major au
0.0233
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About Qatar-1 b

Qatar-1 b is an uncommon exoplanet. It lies about 605.4 light-years from Earth, shines at apparent magnitude 12.69, has an equilibrium temperature near 1,418 K and spans roughly 12.81 Earth radii.

Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

How to see it

At apparent magnitude 12.69, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Qatar-1 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 Qatar-1 b is an uncommon exoplanet

Qatar-1 b scores 33 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 1 point would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Gas giant, Lava world 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.