Exoplanet · mini-Neptune
TIC 390586021 b
TIC 390586021 b is a mini-Neptune orbiting the star TIC 390586021. Its year lasts 2.75 Earth days. It was discovered in 2026 by the Transit method.
| Host star | TIC 390586021 |
|---|---|
| Distance | 373.6 light-years (114.6 pc) |
| Orbital period | 2.75 days |
| Radius | 2.86 R⊕ · 0.255 R♃ |
| Mass | 8.55 M⊕ · 0.0269 M♃ (estimated from the radius) |
| Density | 2.01 g/cm³ |
| Discovery method | Transit |
| Discovery year | 2026 |
| Discovered by | Transiting Exoplanet Survey Satellite (TESS) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.08. Visible from the whole Southern Hemisphere and north to latitude 59° N. South of latitude 59° S it never sets. It stands highest at midnight in April, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1652. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 6.6 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.