About TOI-5261 b
TOI-5261 b is an epic exoplanet. It lies about 1,229.8 light-years from Earth, has an equilibrium temperature near 1,244 K, spans roughly 11.6 Earth radii and weighs about 3,651.85 Earth masses.
Packed denser than solid iron.
Epic exoplanet 51 EP
TOI-5261 b
RA 305.4585° · Dec 19.4358° · exoplanet
Score breakdown
· 6 badgesEpic 68 pts → Anomaly
- Denser than iron +18
- Hot Jupiter +10
- Distant (>1000 ly) +10
- Confirmed exoplanet +5
- Gas giant +4
- Found by TESS +4
Total score 51
17 more points to reach Anomaly.
Badges
- Confirmed exoplanet · +5
- Gas giant · +4
- Hot Jupiter · +10
- Denser than iron · +18
- Found by TESS · +4
- Distant (>1000 ly) · +10
Trivia
What makes it special
- Heavyweight. Packed denser than solid iron.
Could we get there?
- Verdict. Impossible with our current technology — and the next millennium of it.
Getting there
- Aboard Voyager 1. ≈ 21.6 million years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 1.9 million years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 12.3 thousand years in a starship at a tenth of light speed.
- Distance. 1230 light-years from Earth.
Look-back time
- Look-back time. The light you'd see left around the year 796.
Saying hello
- Say hello. A radio message and its reply would take 2460 years round-trip.
Standing on it
- A year here. A full year lasts just 4.2 Earth days.
By the numbers
- Size. About 11.6× the width of Earth.
- Volume. About 1561 Earths could fit inside it.
- Mass. Roughly 3652× Earth's mass — about 11.5 Jupiters.
- Your weight. You'd weigh about 27.1× your Earth weight standing here.
- Density. Denser than solid iron.
- Temperature. Around 971°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
- 12.9
- discovery facility
- Transiting Exoplanet Survey Satellite (TESS)
- discovery method
- Transit
- dist ly
- 1229.7842
- eccentricity
- 0.1585
- eq temp k
- 1244
- insolation
- 159.592
- mass earth
- 3651.8484
- name
- TOI-5261 b
- orbital period days
- 4.151
- radius earth
- 11.6013
- sys num planets
- 1
How to see it
Like any astronomical target, TOI-5261 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-5261 b is an epic exoplanet
TOI-5261 b scores 51 points on Spacedle's rarity scale, which places it in the epic tier. Another 17 points would lift it into a rarer tier.
That score comes from 6 science badges — Confirmed exoplanet, Gas giant, Hot Jupiter, Denser than iron, 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.