Confirmed exoplanet · Database record + computed analysis
TOI-1266 d
A confirmed world orbiting TOI-1266, 117.5 light-years away.
A super-Earth
1.74 Earth radii. Worlds between Earth and Neptune in size are the most common in the galaxy, yet our Solar System has none, which is why each one matters.
The orbit
Its year, one full orbit, takes just 32.5 Earth days.
Temperature and starlight
Its equilibrium temperature (the airless-world estimate) is about 15 °C. In the range where, with the right atmosphere, liquid water is conceivable; a real atmosphere could shift the true surface figure a lot (Earth's equilibrium value is −18 °C, yet we average +15 °C). It receives 1.30 times Earth's starlight, the same order as our own world.
Its sun
Its star is a red dwarf (3,563 K surface), type M2: small, dim, flare-prone, and destined to outlive the Sun many times over. It shares the system with 2 other known planets.
How far is that, really?
At 117 light-years, tonight's light from this system left it around the year 1908. A Voyager-speed probe would need roughly 2,078,080 years to get there.
How we found it
It was found through transit timing variations: its gravity nudges a sibling planet's transits early and late, betraying its presence without ever being seen directly. The discovery was announced in 2025 from Transiting Exoplanet Survey Satellite (TESS).
Everything above is computed from the archive’s measured values for this planet. Where a quantity is missing, the statement is omitted rather than guessed.
About this record
The measured values come from the NASA Exoplanet Archive, and any missing value has not been determined yet; the Atlas never fills gaps with guesses. More standout worlds: Proxima b, TRAPPIST-1e, K2-18 b, 55 Cancri e, and the detection methods that found them all.