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Rare exoplanet 47 EP

NGTS-10 b

RA 91.8723° · Dec -25.5949° · exoplanet

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Score breakdown

· 6 badges
47 pts · Rare
Rare 50 pts → Epic
  • Lava world +14
  • Ultra-short period +14
  • Distant (over 1,000 light-years) +6
  • Confirmed exoplanet +5
  • Gas giant +4
  • Blasted by starlight +4
Total score 47

3 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4
  • Lava world · +14
  • Ultra-short period · +14
  • Blasted by starlight · +4

Trivia

What makes it special

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

Hard to believe

  • A year in a day. Its entire year is over in 18.4 hours. Birthdays here would come round faster than meals.

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 14.5 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • 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 December — that's when to go looking.

Properties

density gcc
1.43
diameter km
172296.0162
discovery facility
Next-Generation Transit Survey (NGTS)
discovery method
Transit
discovery year
2020
dist ly
1059.0241
eccentricity
0
eq temp k
1332
host star teff
4600
insolation
3716.1785
mag
14.506
mass earth
687.1485
name
NGTS-10 b
orbital period days
0.7669
radius earth
13.5068
semi major au
0.0143
spect
K5 V
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About NGTS-10 b

NGTS-10 b is a rare exoplanet. It lies about 1,059 light-years from Earth, shines at apparent magnitude 14.51, has spectral type K5 V and has an equilibrium temperature near 1,332 K.

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

How to see it

At apparent magnitude 14.51, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, NGTS-10 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 NGTS-10 b is a rare exoplanet

NGTS-10 b scores 47 points on Spacedle's rarity scale, which places it in the rare tier. Another 3 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Gas giant, Lava world, Ultra-short period and Blasted by starlight — 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.