The TOI-3540 A system contains 1 exoplanet.
| Mass | 1.08 solar masses |
| Radius | 1.23 solar radiae |
| Temperature | 5810 kelvin |
| Stellar Metallicity | 0.176 decimal exponent |
| Age | 6 billion years |
At more than 50 Earth masses, TOI-3540 A b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 375.038 Earth masses |
| Density | 0.065 grams per cubic centimeter |
| Radius | 23.539 Earth radiae |
| Semi-major Axis | 0.04289 AU |
| Eccentricity | 0 |
| Orbital Period | 3.120 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 | 2022-08 |
| Reference | Yee et al. 2022 |