Confirmed exoplanet · Database record + computed analysis
TOI-1670 b
A confirmed world orbiting TOI-1670, 548.2 light-years away.
A sub-Neptune
2.06 Earth radii, likely a rocky core under a thick gas or steam envelope rather than a walkable surface. With 41.3 Earth masses packed into that size, its density points to rock and iron rather than gas.
The orbit
Its year, one full orbit, takes just 11.0 Earth days. The orbit is strongly stretched (eccentricity 0.59), so its distance from the star, and with it the climate, swings dramatically.
Temperature and starlight
Its equilibrium temperature (the airless-world estimate) is about 789 °C. Hotter than Venus's surface. It receives 196.7 times the starlight Earth gets.
Its sun
Its star is hotter than the Sun (6,170 K, F7 V), burning brighter and faster. It shares the system with 1 other known planet.
How far is that, really?
At 548 light-years, tonight's light from this system left it around the year 1477. A Voyager-speed probe would need roughly 9,698,393 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 2022 from Transiting Exoplanet Survey Satellite (TESS).
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.