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Epic exoplanet 71 EP

KELT-16 b

RA 314.2685° · Dec 31.6610° · exoplanet

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Score breakdown

· 7 badges
71 pts · Epic
Epic 78 pts → Anomaly
  • Ultra-hot Jupiter +26
  • Ultra-short period +14
  • Two suns in its sky +12
  • Distant (over 1,000 light-years) +6
  • Confirmed exoplanet +5
  • Gas giant +4
  • Blasted by starlight +4
Total score 71

7 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4
  • Ultra-hot Jupiter · +26
  • Ultra-short period · +14
  • Blasted by starlight · +4
  • Two suns in its sky · +12

Trivia

What makes it special

  • Ultra-hot Jupiter. So hot that iron vaporises on the dayside, blows around to the night side and rains back down as molten metal.

Hard to believe

  • A year in a day. Its entire year is over in 23.3 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 11.7 you'll want a small backyard telescope.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around August — that's when to go looking.

Properties

density gcc
1.2
diameter km
202322.7078
discovery facility
KELT
discovery method
Transit
discovery year
2017
dist ly
1450.0439
eccentricity
0
eq temp k
2453
host star teff
6236
inclination
84.4
insolation
6992.0328
mag
11.717
mass earth
874.0325
multi star system
yes
name
KELT-16 b
orbital period days
0.969
radius earth
15.8607
semi major au
0.0204
spect
F7 V
sys num planets
1
sys num stars
2
tidally locked
yes
tidally locked inferred
yes

About KELT-16 b

KELT-16 b is an epic exoplanet. It lies about 1,450 light-years from Earth, shines at apparent magnitude 11.72, has spectral type F7 V and has an equilibrium temperature near 2,453 K.

So hot that iron vaporises on the dayside, blows around to the night side and rains back down as molten metal.

How to see it

At apparent magnitude 11.72, a small backyard telescope will bring it into view.

Like any astronomical target, KELT-16 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 KELT-16 b is an epic exoplanet

KELT-16 b scores 71 points on Spacedle's rarity scale, which places it in the epic tier. Another 7 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Gas giant, Ultra-hot Jupiter, Ultra-short period, Blasted by starlight and Two suns in its sky — 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.