Confirmed exoplanet · Database record + computed analysis
HD 176986 c
A confirmed world orbiting HD 176986, 90.6 light-years away.
A giant planet
about 2098 Earth masses (Jupiter is 318).
The orbit
Its year, one full orbit, takes just 16.8 Earth days.
Temperature and starlight
Its equilibrium temperature (the airless-world estimate) is about 285 °C. Above water's boiling point. It receives 22.9 times the starlight Earth gets.
Its sun
Its star is an orange K-type (4,931 K), K2.5 V: cooler and longer-lived than the Sun, a class some astronomers consider ideal for habitability. It shares the system with 2 other known planets.
How far is that, really?
At 91 light-years, tonight's light from this system left it around the year 1935. A Voyager-speed probe would need roughly 1,603,307 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 2017 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.