The KOI-1599 system contains 2 exoplanets. It is located 3690.91 light years away from the solar system.
| Mass | 1.02 solar masses |
| Radius | 0.97 solar radiae |
| Temperature | 5833 kelvin |
| Stellar Metallicity | 0.06 decimal exponent |
| Age | 4.7 billion years |
At 4.601 Earth masses, KOI-1599 c is a so called Super Earth. Super Earths could be terrestrial worlds like Earth, but they could also be ocean worlds or terrestrial worlds wrapped in a substantial atmosphere, in which case some refer to them as Mini Neptunes.
| Mass | 4.600 Earth masses |
| Density | 3.690 grams per cubic centimeter |
| Radius | 1.900 Earth radiae |
| Semi-major Axis | 0.14728 AU |
| Eccentricity | 0.014 |
| Orbital Period | 20.442 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2019-06 |
| Reference | Panichi et al. 2019 |
At more than 10 Earth masses, KOI-1599 b is an ice giant, a planet that is made up mostly of volatiles like water, amonia and methane, and enveloped by a dense hydrogen and helium atmosphere, much like Uranus and Neptune.
| Mass | 9.000 Earth masses |
| Density | 7.210 grams per cubic centimeter |
| Radius | 1.900 Earth radiae |
| Semi-major Axis | 0.112293 AU |
| Eccentricity | 0.0114 |
| Orbital Period | 13.609 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2019-06 |
| Reference | Panichi et al. 2019 |