Confirmed exoplanet · Database record + computed analysis
TCP J05074264+2447555 b
A confirmed world orbiting TCP J05074264+2447555, 1,647.1 light-years away.
A Neptune-class world
4.72 Earth radii, in the ice-giant size range. At only 20.0 Earth masses for that size, it must be substantially gas or volatile ices: puffy, not rocky.
Temperature and starlight
Its equilibrium temperature (the airless-world estimate) is about 71 °C. It receives 2.4 times the starlight Earth gets.
Its sun
Its star is Sun-like (5,805 K; the Sun is 5,772 K).
How far is that, really?
At 1,647 light-years, tonight's light from this system left it around the year 378. A Voyager-speed probe would need roughly 29,141,286 years to get there.
How we found it
It was found by gravitational microlensing: the star (and planet) drifted in front of a farther star, and their gravity briefly magnified the background light in a telltale pattern. Such alignments never repeat, so each detection is a one-time event. The discovery was announced in 2018 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.