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Rare exoplanet 49 EP

TOI-1634 b

RA 56.3906° · Dec 37.1123° · exoplanet

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Score breakdown

· 6 badges
49 pts · Rare
Rare 50 pts → Epic
  • Ultra-short period +14
  • Two suns in its sky +12
  • Super-Earth +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Found by TESS +4
Total score 49

1 more point to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Super-Earth · +8
  • Ultra-short period · +14
  • Multi-planet system · +6
  • Found by TESS · +4
  • Two suns in its sky · +12

Trivia

Hard to believe

  • A year in a day. Its entire year is over in 23.7 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. Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.
  • Crowded system. One of at least 2 planets orbiting its star.

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

Properties

density gcc
5.282
diameter km
22438.1558
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2021
dist ly
115.047
eccentricity
0
eq temp k
900
host star teff
3550
inclination
86.66
insolation
121
mag
13.217
mass earth
4.9
multi star system
yes
name
TOI-1634 b
orbital period days
0.9893
radius earth
1.759
semi major au
0.0154
spect
M2
sys num planets
2
sys num stars
2
tidally locked
yes
tidally locked inferred
yes

About TOI-1634 b

TOI-1634 b is a rare exoplanet. It lies about 115 light-years from Earth, shines at apparent magnitude 13.22, has spectral type M2 and has an equilibrium temperature near 900 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 13.22, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, TOI-1634 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-1634 b is a rare exoplanet

TOI-1634 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, Ultra-short period, Multi-planet system, Found by TESS 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.