The Kepler-197 system contains 4 exoplanets. It is located 1078.19 light years away from the solar system.
| Mass | 0.86 solar masses |
| Radius | 1.12 solar radiae |
| Temperature | 6004 kelvin |
| Stellar Metallicity | -0.441 decimal exponent |
| Age | 5.37 billion years |
At less than 1.5 Earth masses, Kepler-197 b is a terrestrial planet, much like the terrestrial planets we find in our solar system, namely Mercury, Venus, Earth and Mars.
| Mass | 1.040 Earth masses |
| Density | 5.390 grams per cubic centimeter |
| Radius | 1.020 Earth radiae |
| Semi-major Axis | 0.06 AU |
| Eccentricity | 0.02 |
| Orbital Period | 5.599 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-197 c 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 | 5.300 Earth masses |
| Density | 15.700 grams per cubic centimeter |
| Radius | 1.230 Earth radiae |
| Semi-major Axis | 0.09 AU |
| Eccentricity | 0.08 |
| Orbital Period | 10.350 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 1.984 Earth masses, Kepler-197 d 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 | 1.980 Earth masses |
| Density | 5.990 grams per cubic centimeter |
| Radius | 1.220 Earth radiae |
| Semi-major Axis | 0.119 AU |
| Eccentricity | 0.03 |
| Orbital Period | 15.678 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 less than 1.5 Earth masses, Kepler-197 e is a terrestrial planet, much like the terrestrial planets we find in our solar system, namely Mercury, Venus, Earth and Mars.
| Mass | 0.693 Earth masses |
| Density | 5.050 grams per cubic centimeter |
| Radius | 0.910 Earth radiae |
| Semi-major Axis | 0.164 AU |
| Eccentricity | 0.38 |
| Orbital Period | 25.210 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 |