Exoplanet · Neptune-like planet
HD 140901 b
HD 140901 b is a Neptune-like planet orbiting the star HD 140901. Its year lasts 9.02 Earth days. It was discovered in 2022 by the Radial Velocity method.
| Host star | HD 140901 |
|---|---|
| Distance | 49.7 light-years (15.3 pc) |
| Orbital period | 9.02 days |
| Orbital radius | 0.085 AU |
| Eccentricity | 0.472 |
| Radius | 4.07 R⊕ · 0.363 R♃ |
| Mass (minimum) | 15.6 M⊕ · 0.049 M♃ |
| Density | 1.27 g/cm³ |
| Equilibrium temperature | 904 K (631 °C) |
| Stellar flux received | 109 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2022 |
| Discovered by | Multiple Observatories |
Habitable zone
Inside the inner edge of the habitable zone: it receives 109 times the light the Earth does, too hot to keep liquid water on its surface.
Its star in the sky
In the planet's sky its star is a disc 6° across: 11 times the Sun as we see it from Earth.
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.01). Visible from the whole Southern Hemisphere and north to latitude 52° N. South of latitude 52° S it never sets. It stands highest at midnight in May, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1976. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 882 thousand years.
Planets in the same system
- HD 140901 c 14,400-day orbit · 13.4 R⊕
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.