Exoplanet · mini-Neptune
TIC 18942729 b
TIC 18942729 b is a mini-Neptune orbiting the star TIC 18942729. Its year lasts 0.998 Earth days. It was discovered in 2026 by the Transit method.
| Host star | TIC 18942729 |
|---|---|
| Distance | 375.6 light-years (115.2 pc) |
| Orbital period | 24 hours |
| Radius | 2 R⊕ · 0.178 R♃ |
| Mass | 4.66 M⊕ · 0.0147 M♃ (estimated from the radius) |
| Density | 3.2 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 12.55. Visible from the whole Northern Hemisphere and south to latitude 73° S. North of latitude 73° N it never sets. It stands highest at midnight in January, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1650. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 6.7 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.