Confirmed exoplanet · Database record + computed analysis
K2-207 b
A confirmed world orbiting K2-207, 1,184.2 light-years away.
A sub-Neptune
2.61 Earth radii, likely a rocky core under a thick gas or steam envelope rather than a walkable surface.
The orbit
Its year, one full orbit, takes just 12.5 Earth days.
Its sun
Its star is Sun-like (5,522 K; the Sun is 5,772 K).
How far is that, really?
At 1,184 light-years, tonight's light from this system left it around the year 841. A Voyager-speed probe would need roughly 20,950,796 years to get there.
How we found it
It was found by the transit method: the planet crosses its star's face on schedule, dimming it by a tiny, repeating fraction. The dip's depth gives the planet's size. The discovery was announced in 2018 from K2.
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.