HATS-39 is 2,865 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 6,572 K star; the first was found in 2018 by transit (HATSouth).
Fly there in 3DHATS-39 b goes round its star every 4.58 days, 19 times as often as Mercury goes round the Sun.
| Surface temperature | 6,572 K |
| Mass | 1.379 solar masses |
| Radius | 1.621 solar radii |
| Luminosity | 4.37 times the Sun |
| Apparent magnitude | 12.745 |
| Age | about 2.06 billion years |
| Distance from the Sun | 2865.4 light-years (878.5 parsecs) |
| Position (J2000) | RA 112.4192°, Dec -29.9379° |
| Constellation | Puppis |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HATS-39 b | 4.58 days | 0.0601 AU | 17.598 R⊕ | 200.23 M⊕ | Transit, 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 6,572 K, 4.4 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.89 to 3.29 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 2,865 years ago, around 800 BC.