HATS-3
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HATS-3 is an F-type main-sequence star 1,380light-years(420parsecs) away. Its surface temperature is 6351±76 K. HATS-3 is relatively depleted in its concentration of heavy elements, with a metallicity Fe/H index of −0.157±0.07, but is slightly younger than the Sun at an age of 3.2+0.6 −0.4 billion years.
A multiplicity survey in 2016 detected a candidate stellar companion to HATS-3, 3.671±0.016 arc-seconds away.
Planetary system
In 2013, one planet, named HATS-3b, was discovered on a tight, nearly circular orbit. The planetary orbit of HATS-3b is likely aligned with the equatorial plane of the star, at a misalignment angle of 3±25°. The planetary equilibrium temperature is 1643 K.
| Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination (°) | Radius |
|---|---|---|---|---|---|---|
| b | 1.10+0.18 −0.19MJ | 0.04852+0.00053 −0.00054 | 3.5478510(50) | <0.30 | 86.20±0.30 | 1.381±0.035RJ |