Confirmed exoplanet · Database record + computed analysis
HD 85426 c
A confirmed world orbiting TOI-1774, 176.0 light-years away.
A sub-Neptune
3.19 Earth radii, likely a rocky core under a thick gas or steam envelope rather than a walkable surface. At only 10.3 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 35.7 Earth days.
Temperature and starlight
Its equilibrium temperature (the airless-world estimate) is about 367 °C. Above water's boiling point.
Its sun
Its star is Sun-like (5,746 K; the Sun is 5,772 K). It shares the system with 1 other known planet.
How far is that, really?
At 176 light-years, tonight's light from this system left it around the year 1849. A Voyager-speed probe would need roughly 3,114,598 years to get there.
How we found it
It was found by the radial-velocity method: the planet's gravity swings its star in a small circle, and that wobble shows up as a rhythmic Doppler shift in the starlight. The wobble's size gives the planet's minimum mass. The discovery was announced in 2026 from Multiple Observatories.
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.