HAT-P-57 is 913 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this A8 V star; the first was found in 2015 by transit (HATNet).
Fly there in 3DHAT-P-57 b goes round its star every 2.47 days, 36 times as often as Mercury goes round the Sun.
HAT-P-57 is one of 3 stars in its system. The position of the other 2 is not catalogued, so only HAT-P-57 and its planets are drawn.
| Spectral type | A8 V |
| Surface temperature | 6,330 K |
| Mass | 2.77 solar masses |
| Radius | 1.85 solar radii |
| Luminosity | 6.4 times the Sun |
| Apparent magnitude | 10.639 |
| Age | about 1 billion years |
| Distance from the Sun | 912.8 light-years (279.9 parsecs) |
| Position (J2000) | RA 274.7434°, Dec 10.5972° |
| Constellation | Ophiuchus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HAT-P-57 b | 2.47 days | 0.0406 AU | 19.504 R⊕ | 448.14 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.