HAT-P-55 is 1,668 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 5,804 K star; the first was found in 2015 by transit (HATNet).
Fly there in 3DHAT-P-55 b goes round its star every 3.59 days, 25 times as often as Mercury goes round the Sun.
| Surface temperature | 5,804 K |
| Mass | 1.028 solar masses |
| Radius | 1.105 solar radii |
| Luminosity | 1.249 times the Sun |
| Apparent magnitude | 13.197 |
| Age | about 5.3 billion years |
| Distance from the Sun | 1667.9 light-years (511.4 parsecs) |
| Position (J2000) | RA 264.2735°, Dec 25.7311° |
| Constellation | Hercules |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HAT-P-55 b | 3.59 days | 0.0463 AU | 14.841 R⊕ | 189.43 M⊕ | Transit, 2015 |
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 5,804 K, 1.2 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 1.06 to 1.87 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 1,668 years ago, around AD 360.