Confirmed exoplanet · Database record + computed analysis
Kepler-411 e
A confirmed world orbiting Kepler-411, 501.2 light-years away.
A sub-Neptune
3.28 Earth radii, likely a rocky core under a thick gas or steam envelope rather than a walkable surface. At only 10.8 Earth masses for that size, it must be substantially gas or volatile ices: puffy, not rocky.
The orbit
Its year, one full orbit, takes just 31.5 Earth days.
Temperature and starlight
Its equilibrium temperature (the airless-world estimate) is about 230 °C. Above water's boiling point. It receives 7.6 times the starlight Earth gets.
Its sun
Its star is an orange K-type (4,974 K), K2 V: cooler and longer-lived than the Sun, a class some astronomers consider ideal for habitability. The system holds 2 stars, so its skies have more than one sun. It shares the system with 3 other known planets.
How far is that, really?
At 501 light-years, tonight's light from this system left it around the year 1524. A Voyager-speed probe would need roughly 8,867,953 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 2018 from Kepler.
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.