The TOI-640 system contains 1 exoplanet. It is located 1115.44 light years away from the solar system.
| Mass | 1.54 solar masses |
| Radius | 2.08 solar radiae |
| Temperature | 6460 kelvin |
| Stellar Metallicity | 0.072 decimal exponent |
| Age | 1.99 billion years |
At more than 50 Earth masses, TOI-640 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 279.690 Earth masses |
| Density | 0.195 grams per cubic centimeter |
| Radius | 19.851 Earth radiae |
| Semi-major Axis | 0.06608 AU |
| Eccentricity | 0.05 |
| Orbital Period | 5.004 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 | 2021-04 |
| Reference | Rodriguez et al. 2021 |