HAT-P-31 is 1,122 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 6,065 K star; the first was found in 2011 by transit (HATNet).
Fly there in 3DHAT-P-31 b goes round its star every 5.01 days, 18 times as often as Mercury goes round the Sun.
| Surface temperature | 6,065 K |
| Mass | 1.31 solar masses |
| Radius | 1.39 solar radii |
| Luminosity | 2.711 times the Sun |
| Apparent magnitude | 11.667 |
| Age | about 3.17 billion years |
| Distance from the Sun | 1122.1 light-years (344.0 parsecs) |
| Position (J2000) | RA 271.5377°, Dec 26.4266° |
| Constellation | Hercules |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HAT-P-31 b | 5.01 days | 0.0610 AU | 12.218 R⊕ | 721.47 M⊕ | Transit, 2011 |
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.