HD 15906 is 149 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this K V star; the first was found in 2023 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DHD 15906 b goes round its star every 10.9 days, 8 times as often as Mercury goes round the Sun.
| Spectral type | K V |
| Surface temperature | 4,757 K |
| Mass | 0.79 solar masses |
| Radius | 0.762 solar radii |
| Luminosity | 0.27 times the Sun |
| Apparent magnitude | 9.78 |
| Distance from the Sun | 148.6 light-years (45.6 parsecs) |
| Position (J2000) | RA 38.2713°, Dec -10.3522° |
| Constellation | Cetus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HD 15906 b | 10.9 days | 0.0900 AU | 2.24 R⊕ | 5.65 M⊕ estimated | Transit, 2023 |
| HD 15906 c | 21.6 days | 0.141 AU | 2.93 R⊕ | 8.91 M⊕ estimated | Transit, 2023 |
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 4,757 K, 0.27 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.52 to 0.95 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 149 years ago, around 1880.