The MXB 1658-298 system contains 1 exoplanet.
| Mass | 1.98 solar masses |
| Radius | 1.3 solar radiae |
| Temperature | - kelvin |
| Stellar Metallicity | - decimal exponent |
| Age | - billion years |
At more than 50 Earth masses, MXB 1658-298 b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 7532.571 Earth masses |
| Density | 24.000 grams per cubic centimeter |
| Radius | 12.000 Earth radiae |
| Semi-major Axis | 1.613 AU |
| Eccentricity | NaN |
| Orbital Period | 760.000 days |
| Discovery Method | Eclipse Timing Variations |
| Discovery Facility | Multiple Observatories |
| Discovery Telescope | Multiple Telescopes |
| Discovery Instrument | Multiple Instruments |
| Discovery Date | 2017-06 |
| Reference | Jain et al. 2017 |