HD 4203 is 265 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this G5 star; the first was found in 2001 by radial velocity (W. M. Keck Observatory).
Fly there in 3DHD 4203 c takes 18.3 years to go round its star once.
| Spectral type | G5 |
| Surface temperature | 5,596 K |
| Mass | 1.25 solar masses |
| Radius | 1.42 solar radii |
| Luminosity | 1.963 times the Sun |
| Apparent magnitude | 8.7 |
| Age | about 8.52 billion years |
| Distance from the Sun | 265.4 light-years (81.4 parsecs) |
| Position (J2000) | RA 11.1722°, Dec 20.4484° |
| Constellation | Pisces |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HD 4203 b | 431.9 days | 1.170 AU | 13.3 R⊕ estimated | 708.76 M⊕ minimum | Radial Velocity, 2001 |
| HD 4203 c | 18.3 years | 6.950 AU | 13.3 R⊕ estimated | 689.66 M⊕ minimum | Radial Velocity, 2014 |
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 5,596 K, 2.0 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.35 to 2.39 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 265 years ago, around 1760.