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Epic exoplanet 73 EP

TOI-1994 b

RA 147.1746° · Dec -51.7566° · exoplanet

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Score breakdown

· 8 badges
73 pts · Epic
Epic 78 pts → Anomaly
  • Ultra-hot Jupiter +26
  • Orbits a hot blue-white star +14
  • Tidally locked +10
  • Distant (over 1,000 light-years) +6
  • Confirmed exoplanet +5
  • Gas giant +4
  • Blasted by starlight +4
  • Found by TESS +4
Total score 73

5 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4
  • Ultra-hot Jupiter · +26
  • Tidally locked · +10
  • Blasted by starlight · +4
  • Found by TESS · +4
  • Orbits a hot blue-white star · +14

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

  • Denser than iron. It is packed tighter than solid iron — whatever it is made of, it is not ordinary rock.

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. Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.

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 10.5 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 February — that's when to go looking.

Properties

density gcc
15
diameter km
174440.4795
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2024
dist ly
1681.6701
eccentricity
0.341
eq temp k
2290
host star teff
7700
inclination
85.5
insolation
1910.26
mag
10.514
mass earth
7024.0078
name
TOI-1994 b
orbital period days
4.0337
radius earth
13.675
semi major au
0.0613
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About TOI-1994 b

TOI-1994 b is an epic exoplanet. It lies about 1,681.7 light-years from Earth, shines at apparent magnitude 10.51, has an equilibrium temperature near 2,290 K and spans roughly 13.67 Earth radii.

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 10.51, a small backyard telescope will bring it into view.

Like any astronomical target, TOI-1994 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 TOI-1994 b is an epic exoplanet

TOI-1994 b scores 73 points on Spacedle's rarity scale, which places it in the epic tier. Another 5 points would lift it into a rarer tier.

That score comes from 8 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Gas giant, Ultra-hot Jupiter, Tidally locked, Blasted by starlight, Found by TESS and Orbits a hot blue-white star — 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.