HD 74156 is 188 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this G0 star; the first was found in 2003 by radial velocity (Haute-Provence Observatory).
Fly there in 3DHD 74156 b goes round its star every 51.6 days, 1.7 times as often as Mercury goes round the Sun.
| Spectral type | G0 |
| Surface temperature | 6,068 K |
| Mass | 1.1 solar masses |
| Radius | 1.51058 solar radii |
| Luminosity | 2.516 times the Sun |
| Apparent magnitude | 7.61 |
| Age | about 3.7 billion years |
| Distance from the Sun | 187.9 light-years (57.6 parsecs) |
| Position (J2000) | RA 130.6048°, Dec 4.5772° |
| Constellation | Hydra |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HD 74156 b | 51.6 days | 0.280 AU | 13.5 R⊕ estimated | 532.36 M⊕ minimum | Radial Velocity, 2003 |
| HD 74156 c | 6.7 years | 3.678 AU | 12.5 R⊕ estimated | 2754 M⊕ | Radial Velocity, 2003 |
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 6,068 K, 2.5 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.48 to 2.59 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 188 years ago, around 1840.