HAT-P-51 is 1,435 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this G7 star; the first was found in 2015 by transit (HATNet).
Fly there in 3DHAT-P-51 b goes round its star every 4.22 days, 21 times as often as Mercury goes round the Sun.
| Spectral type | G7 |
| Surface temperature | 5,453 K |
| Mass | 0.961 solar masses |
| Radius | 0.995 solar radii |
| Luminosity | 0.79 times the Sun |
| Apparent magnitude | 13.51 |
| Age | about 8.1 billion years |
| Distance from the Sun | 1435.4 light-years (440.1 parsecs) |
| Position (J2000) | RA 21.0651°, Dec 32.8107° |
| Constellation | Pisces |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HAT-P-51 b | 4.22 days | 0.0504 AU | 13.507 R⊕ | 97.573 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.