HD 215152 is 70.4 light-years from the Sun. The NASA Exoplanet Archive lists 4 planets around this K3 V star; the first was found in 2018 by radial velocity (La Silla Observatory).
Fly there in 3DHD 215152 b goes round its star every 5.76 days, 15 times as often as Mercury goes round the Sun.
| Spectral type | K3 V |
| Surface temperature | 4,935 K |
| Mass | 0.77 solar masses |
| Radius | 0.73 solar radii |
| Luminosity | 0.3002 times the Sun |
| Apparent magnitude | 8.11 |
| Distance from the Sun | 70.4 light-years (21.6 parsecs) |
| Position (J2000) | RA 340.8381°, Dec -6.4021° |
| Constellation | Aquarius |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HD 215152 b | 5.76 days | 0.0576 AU | — | 565.42 M⊕ | Radial Velocity, 2018 |
| HD 215152 c | 7.28 days | 0.0674 AU | — | 468.8 M⊕ | Radial Velocity, 2018 |
| HD 215152 d | 10.9 days | 0.0880 AU | — | 770.42 M⊕ | Radial Velocity, 2018 |
| HD 215152 e | 25.2 days | 0.154 AU | — | 975.42 M⊕ | Radial Velocity, 2018 |
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.
For a star of 4,935 K, 0.30 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.55 to 0.99 AU. None of its known planets orbits inside it. The zone says how much starlight arrives, not whether a planet has water or air. The edges follow Kopparapu et al. (2014), as the 3D view draws them.
The light you see left 70 years ago, within living memory.