The TOI-1899 system contains 1 exoplanet. It is located 418.91 light years away from the solar system.
| Mass | 0.63 solar masses |
| Radius | 0.61 solar radiae |
| Temperature | 3841 kelvin |
| Stellar Metallicity | 0.31 decimal exponent |
| Age | 7.4 billion years |
At more than 50 Earth masses, TOI-1899 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 209.768 Earth masses |
| Density | 0.540 grams per cubic centimeter |
| Radius | 12.890 Earth radiae |
| Semi-major Axis | 0.1587 AU |
| Eccentricity | 0.118 |
| Orbital Period | 29.020 days |
| Discovery Method | Transit |
| Discovery Facility | Transiting Exoplanet Survey Satellite (TESS) |
| Discovery Telescope | 0.1 m TESS Telescope |
| Discovery Instrument | TESS CCD Array |
| Discovery Date | 2020-09 |
| Reference | Cañas et al. 2020 |