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Uncommon exoplanet 29 EP

Qatar-9 b

RA 160.7481° · Dec 60.9641° · exoplanet

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Score breakdown

· 4 badges
29 pts · Uncommon
Uncommon 34 pts → Rare
  • Hot Jupiter +10
  • Tidally locked +10
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 29

5 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Hot Jupiter · +10
  • 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. 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 14 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 March — 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. ≈ 12.3 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
1.43
diameter km
144271.104
discovery facility
Qatar
discovery method
Transit
discovery year
2019
dist ly
697.2269
eccentricity
0
eq temp k
1134
host star teff
4309
inclination
89.23
insolation
210.669
mag
14.023
mass earth
378.2177
name
Qatar-9 b
orbital period days
1.5407
radius earth
11.3099
semi major au
0.0234
spect
K5 V
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About Qatar-9 b

Qatar-9 b is an uncommon exoplanet. It lies about 697.2 light-years from Earth, shines at apparent magnitude 14.02, has spectral type K5 V and has an equilibrium temperature near 1,134 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 14.02, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Qatar-9 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-9 b is an uncommon exoplanet

Qatar-9 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, Gas giant, Hot Jupiter 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.