HAT-P-42 is 1,322 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 5,743 K star; the first was found in 2012 by transit (HATNet).
Fly there in 3DHAT-P-42 b goes round its star every 4.64 days, 19 times as often as Mercury goes round the Sun.
| Surface temperature | 5,743 K |
| Mass | 1.178 solar masses |
| Radius | 1.53 solar radii |
| Luminosity | 2.27 times the Sun |
| Apparent magnitude | 12.125 |
| Age | about 5.2 billion years |
| Distance from the Sun | 1321.7 light-years (405.2 parsecs) |
| Position (J2000) | RA 135.3444°, Dec 6.0971° |
| Constellation | Hydra |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HAT-P-42 b | 4.64 days | 0.0575 AU | 14.348 R⊕ | 331.8 M⊕ | Transit, 2012 |
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.