Exoplanet · mini-Neptune
HD 190360 d
HD 190360 d is a mini-Neptune orbiting the star HD 190360. Its year lasts 88.7 Earth days. It was discovered in 2026 by the Radial Velocity method.
| Host star | HD 190360 |
|---|---|
| Distance | 52.2 light-years (16.0 pc) |
| Orbital period | 88.7 days |
| Orbital radius | 0.389 AU |
| Eccentricity | 0.058 |
| Radius | 3.48 R⊕ · 0.31 R♃ |
| Mass | 11.9 M⊕ · 0.0374 M♃ |
| Density | 1.55 g/cm³ |
| Surface gravity | 0.983 × Earth |
| Equilibrium temperature | 459 K (186 °C) |
| Stellar flux received | 7.72 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2026 |
| Discovered by | Multiple Facilities |
Habitable zone
Inside the inner edge of the habitable zone: it receives 7.72 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 1.6° across: 2.9 times the Sun as we see it from Earth.
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.73). Visible from the whole Northern Hemisphere and south to latitude 60° S. North of latitude 60° N it never sets. It stands highest at midnight in July, the best time to observe it.
Light's journey
The light you see tonight set out around the year 1974. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 926 thousand years.
Planets in the same system
- HD 190360 c 17.1-day orbit · 5.53 R⊕
- HD 190360 b 2,890-day orbit · 13.5 R⊕
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.