Exoplanet · mini-Neptune
TOI-178 f
TOI-178 f is a mini-Neptune orbiting the star TOI-178. Its year lasts 15.2 Earth days. It was discovered in 2021 by the Transit method.
| Host star | TOI-178 |
|---|---|
| Distance | 204.5 light-years (62.7 pc) |
| Orbital period | 15.2 days |
| Orbital radius | 0.104 AU |
| Eccentricity | 0.000 |
| Radius | 2.42 R⊕ · 0.216 R♃ |
| Mass | 5.63 M⊕ · 0.0177 M♃ |
| Density | 2.22 g/cm³ |
| Surface gravity | 0.964 × Earth |
| Equilibrium temperature | 521 K (248 °C) |
| Stellar flux received | 0.607 × Earth |
| Discovery method | Transit |
| Discovery year | 2021 |
| Discovered by | Multiple Observatories |
Habitable zone
Inside its star's habitable zone: it receives enough light for liquid water to exist on its surface under a suitable atmosphere.
Its star in the sky
In the planet's sky its star is a disc 3.4° across: 6.4 times the Sun as we see it from Earth.
In the sky
A telescope is needed to see it: its apparent magnitude is 12.08. Visible from the whole Southern Hemisphere and north to latitude 60° N. South of latitude 60° S it never sets. It stands highest at midnight in September, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1822. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.6 million years.
Planets in the same system
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.