The Kepler-174 system contains 3 exoplanets. It is located 1254.91 light years away from the solar system.
| Mass | 0.6 solar masses |
| Radius | 0.62 solar radiae |
| Temperature | 4880 kelvin |
| Stellar Metallicity | -0.44 decimal exponent |
| Age | 4.9 billion years |
With a mass below 5 Earth masses, a density of 3.28, and a semi-major axis of 0.1 astronomical units, Kepler-174 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 | 0.1 AU |
| Eccentricity | 0 |
| Orbital Period | 13.982 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 2.827 Earth masses, Kepler-174 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 | 2.830 Earth masses |
| Density | 4.700 grams per cubic centimeter |
| Radius | 1.490 Earth radiae |
| Semi-major Axis | 0.214 AU |
| Eccentricity | 0 |
| Orbital Period | 44.001 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-174 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 | 5.430 Earth masses |
| Density | 2.840 grams per cubic centimeter |
| Radius | 2.190 Earth radiae |
| Semi-major Axis | 0.677 AU |
| Eccentricity | 0 |
| Orbital Period | 247.354 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 |