Rare exoplanet 45 EP

TOI-1291 b

RA 245.8180° · Dec 62.9251° · exoplanet

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Score breakdown

· 6 badges

45 pts · Rare

Rare 46 pts → Epic

Lava world +14
Distant (>1000 ly) +10
Blasted by starlight +8
Confirmed exoplanet +5
Neptune-like +4
Found by TESS +4

Total score 45

1 more point to reach Epic.

Badges

Confirmed exoplanet · +5
Neptune-like · +4
Lava world · +14
Blasted by starlight · +8
Found by TESS · +4
Distant (>1000 ly) · +10

Trivia

What makes it special

Lava world. Its surface is likely an ocean of molten rock.

Could we get there?

Verdict. Impossible with our current technology — and the next millennium of it.

Getting there

Aboard Voyager 1. ≈ 24.5 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 2.2 million years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 14 thousand years in a starship at a tenth of light speed.
Distance. 1396 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 630.

Saying hello

Say hello. A radio message and its reply would take 2793 years round-trip.

Standing on it

A year here. A full year lasts just 7.2 Earth days.

By the numbers

Size. About 5.6× the width of Earth.
Volume. About 179 Earths could fit inside it.
Mass. About 27.1× the mass of Earth.
Your weight. You'd weigh about 0.9× your Earth weight standing here.
Density. Less dense than water — drop it in a big enough ocean and it would float.
Temperature. Around 1376°C — hotter than a self-cleaning oven.

How we found it

Discovery. Found by Transiting Exoplanet Survey Satellite (TESS) using the transit method.

Properties

density gcc: 0.831
discovery facility: Transiting Exoplanet Survey Satellite (TESS)
discovery method: Transit
dist ly: 1396.3489
eq temp k: 1649
insolation: 1230.42
mass earth: 27.1
name: TOI-1291 b
orbital period days: 7.162
radius earth: 5.6383
sys num planets: 1

About TOI-1291 b

TOI-1291 b is a rare exoplanet. It lies about 1,396.3 light-years from Earth, has an equilibrium temperature near 1,649 K, spans roughly 5.64 Earth radii and weighs about 27.1 Earth masses.

Its surface is likely an ocean of molten rock.

How to see it

Like any astronomical target, TOI-1291 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-1291 b is a rare exoplanet

TOI-1291 b scores 45 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, Neptune-like, Lava world, Blasted by starlight, Found by TESS and Distant (>1000 ly) — 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.