HD 168443 is 129 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this G5 star; the first was found in 1998 by radial velocity (W. M. Keck Observatory).
Fly there in 3DHD 168443 b goes round its star every 58.1 days, 1.5 times as often as Mercury goes round the Sun.
| Spectral type | G5 |
| Surface temperature | 5,491 K |
| Mass | 0.98 solar masses |
| Radius | 1.71148 solar radii |
| Luminosity | 2.412 times the Sun |
| Apparent magnitude | 6.92122 |
| Age | about 11.08 billion years |
| Distance from the Sun | 129.2 light-years (39.6 parsecs) |
| Position (J2000) | RA 275.0160°, Dec -9.5967° |
| Constellation | Serpens |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HD 168443 b | 58.1 days | 0.292 AU | 12.6 R⊕ estimated | 2424.4 M⊕ minimum | Radial Velocity, 1998 |
| HD 168443 c | 4.8 years | 2.842 AU | 12.2 R⊕ estimated | 5500.3 M⊕ | Radial Velocity, 2000 |
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 5,491 K, 2.4 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.50 to 2.67 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 129 years ago, around 1900.