HAT-P-19
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HAT-P-19 is a K-type main-sequence star about 658 light-years away. The star is old yet metal-enriched, having amount of heavy elements 250% of solar abundance. A survey in 2012 failed to find any stellar companions to HAT-P-19.
Planetary system
In 2010 a transiting hot Saturn-sized planet was detected. Its equilibrium temperature is 984±10 K, and it is grey in color.
The transit-timing variation measurements in 2015 and 2018 did not detect additional planets in the system.
| Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination (°) | Radius |
|---|---|---|---|---|---|---|
| b | 0.290±0.016 MJ | 0.04649± | 4.00878236+0.00000050 −0.00000049 | 0.084±0.041 | 88.67+0.41 −0.25 | 1.089±0.018 RJ |