Confirmed exoplanet · Database record + computed analysis
HD 28471 b
A confirmed world orbiting HD 28471, 142.4 light-years away.
A super-Earth
1.75 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 3.2 Earth days.
Temperature and starlight
Its equilibrium temperature (the airless-world estimate) is about 1,104 °C. Hot enough to melt copper; any surface would glow. It receives 653.4 times the starlight Earth gets.
Its sun
Its star is Sun-like (5,766 K, G5 V; the Sun is 5,772 K). It shares the system with 2 other known planets.
How far is that, really?
At 142 light-years, tonight's light from this system left it around the year 1883. A Voyager-speed probe would need roughly 2,518,586 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 2025 from La Silla Observatory.
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.