The Kepler-298 system contains 3 exoplanets. It is located 1690.15 light years away from the solar system.
| Mass | 0.66 solar masses |
| Radius | 0.58 solar radiae |
| Temperature | 4465 kelvin |
| Stellar Metallicity | -0.21 decimal exponent |
| Age | 2.4 billion years |
With a mass below 5 Earth masses, a density of 3.28, and a semi-major axis of 0.08 astronomical units, Kepler-298 b could, potentially, be an ocean world - a planet with no dry land.
| Mass | 4.500 Earth masses |
| Density | 3.280 grams per cubic centimeter |
| Radius | 1.960 Earth radiae |
| Semi-major Axis | 0.08 AU |
| Eccentricity | 0 |
| Orbital Period | 10.475 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2014-03 |
| Reference | Rowe et al. 2014 |
With a mass below 5 Earth masses, a density of 3.35, and a semi-major axis of 0.136 astronomical units, Kepler-298 c could, potentially, be an ocean world - a planet with no dry land.
| Mass | 4.380 Earth masses |
| Density | 3.350 grams per cubic centimeter |
| Radius | 1.930 Earth radiae |
| Semi-major Axis | 0.136 AU |
| Eccentricity | 0 |
| Orbital Period | 22.929 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2014-03 |
| Reference | Rowe et al. 2014 |
At more than 10 Earth masses, Kepler-298 d 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 | 6.800 Earth masses |
| Density | 2.390 grams per cubic centimeter |
| Radius | 2.500 Earth radiae |
| Semi-major Axis | 0.305 AU |
| Eccentricity | 0 |
| Orbital Period | 77.474 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2014-03 |
| Reference | Rowe et al. 2014 |