The KMT-2017-BLG-2509L system contains 1 exoplanet. It is located 22961.38 light years away from the solar system.
| Mass | 0.46 solar masses |
| Radius | 0.32 solar radiae |
| Temperature | - kelvin |
| Stellar Metallicity | - decimal exponent |
| Age | - billion years |
At more than 50 Earth masses, KMT-2017-BLG-2509L b is a gas giant, a planet whose mass is mostly made up of hydrogen and helium, like Jupiter and Saturn.
| Mass | 664.261 Earth masses |
| Density | 1.520 grams per cubic centimeter |
| Radius | 13.400 Earth radiae |
| Semi-major Axis | 2.14 AU |
| Eccentricity | NaN |
| Orbital Period | NaN days |
| Discovery Method | Microlensing |
| Discovery Facility | KMTNet |
| Discovery Telescope | 1.6 m wide-field telescope |
| Discovery Instrument | 18k Mosaic CCD camera |
| Discovery Date | 2021-11 |
| Reference | Han et al. 2021 |