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Rare exoplanet 49 EP

TOI-1860 b

RA 226.4567° · Dec 64.0477° · exoplanet

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Score breakdown

· 6 badges
49 pts · Rare
Rare 50 pts → Epic
  • Lava world +14
  • Tidally locked +10
  • Super-Earth +8
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
  • Found by TESS +4
Total score 49

1 more point to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Super-Earth · +8
  • Lava world · +14
  • Tidally locked · +10
  • Found by TESS · +4
  • Orbits a Sun-like star · +8

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. 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 8.4 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • 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 May — that's when to go looking.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Properties

density gcc
5.55
diameter km
16710.622
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2022
dist ly
149.5882
eq temp k
1885
host star teff
5752
insolation
876.703
mag
8.4
mass earth
2.27
name
TOI-1860 b
orbital period days
1.0662
radius earth
1.31
semi major au
0.0204
spect
G V
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

About TOI-1860 b

TOI-1860 b is a rare exoplanet. It lies about 149.6 light-years from Earth, shines at apparent magnitude 8.4, has spectral type G V and has an equilibrium temperature near 1,885 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 8.4, it is an easy target for binoculars.

Like any astronomical target, TOI-1860 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-1860 b is a rare exoplanet

TOI-1860 b scores 49 points on Spacedle's rarity scale, which places it in the rare tier. Another 1 point would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Super-Earth, Lava world, Tidally locked, Found by TESS and Orbits a Sun-like 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.