Exoplanet · gas giant
17 Sco b
17 Sco b is a gas giant orbiting the star 17 Sco. Its year lasts 578 Earth days. It was discovered in 2020 by the Radial Velocity method.
| Host star | 17 Sco |
|---|---|
| Distance | 407.5 light-years (125.0 pc) |
| Orbital period | 578 days |
| Orbital radius | 1.45 AU |
| Eccentricity | 0.060 |
| Radius | 12.9 R⊕ · 1.15 R♃ |
| Mass (minimum) | 1,370 M⊕ · 4.32 M♃ |
| Density | 3.51 g/cm³ |
| Equilibrium temperature | 848 K (574 °C) |
| Stellar flux received | 85.4 × Earth |
| Discovery method | Radial Velocity |
| Discovery year | 2020 |
| Discovered by | Lick Observatory |
Habitable zone
Inside the inner edge of the habitable zone: it receives 85.4 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 9.5° across: 18 times the Sun as we see it from Earth.
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.24). Visible from the whole Southern Hemisphere and north to latitude 78° N. South of latitude 78° 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 1618. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 7.2 million years.
Data: NASA Exoplanet Archive, PSCompPars. Its look in the simulation is a rendering based on the measured radius, mass and temperature.