HD 216520 is 63.8 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this K2 star; the first was found in 2020 by radial velocity (Multiple Observatories).
Fly there in 3DHD 216520 b goes round its star every 35.5 days, 2.5 times as often as Mercury goes round the Sun.
| Spectral type | K2 |
| Surface temperature | 5,103 K |
| Mass | 0.82 solar masses |
| Radius | 0.76 solar radii |
| Luminosity | 0.3532 times the Sun |
| Apparent magnitude | 7.53 |
| Age | about 6 billion years |
| Distance from the Sun | 63.8 light-years (19.6 parsecs) |
| Position (J2000) | RA 341.8769°, Dec 83.6975° |
| Constellation | Cepheus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HD 216520 b | 35.5 days | 0.198 AU | 3.18 R⊕ estimated | 10.26 M⊕ minimum | Radial Velocity, 2020 |
| HD 216520 c | 154.4 days | 0.528 AU | 3.03 R⊕ estimated | 9.44 M⊕ minimum | Radial Velocity, 2020 |
Values are the NASA Exoplanet Archive’s composite parameters. A radius marked estimated comes from a mass–radius relation; a mass marked minimum is M sin i. Planet sizes and colours in the 3D view are renderings: none of these worlds has been photographed as more than a point of light.