The K2-72 system contains 4 exoplanets. It is located 216.67 light years away from the solar system.
| Mass | 0.27 solar masses |
| Radius | 0.33 solar radiae |
| Temperature | 3360.47 kelvin |
| Stellar Metallicity | - decimal exponent |
| Age | - billion years |
At less than 1.5 Earth masses, K2-72 b is a terrestrial planet, much like the terrestrial planets we find in our solar system, namely Mercury, Venus, Earth and Mars.
| Mass | 1.280 Earth masses |
| Density | 5.580 grams per cubic centimeter |
| Radius | 1.080 Earth radiae |
| Semi-major Axis | 0.04 AU |
| Eccentricity | 0.11 |
| Orbital Period | 5.577 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2016-09 |
| Reference | Crossfield et al. 2016 |
At 1.657 Earth masses, K2-72 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 | 1.650 Earth masses |
| Density | 5.810 grams per cubic centimeter |
| Radius | 1.160 Earth radiae |
| Semi-major Axis | 0.078 AU |
| Eccentricity | 0.11 |
| Orbital Period | 15.189 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2016-09 |
| Reference | Crossfield et al. 2016 |
At less than 1.5 Earth masses, K2-72 d is a terrestrial planet, much like the terrestrial planets we find in our solar system, namely Mercury, Venus, Earth and Mars.
| Mass | 1.010 Earth masses |
| Density | 5.390 grams per cubic centimeter |
| Radius | 1.010 Earth radiae |
| Semi-major Axis | 0.05 AU |
| Eccentricity | 0.11 |
| Orbital Period | 7.760 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2016-09 |
| Reference | Crossfield et al. 2016 |
At 2.213 Earth masses, K2-72 e 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. K2-72 e orbits within the habitable zone of its parent star and could, potentially, be a habitable planet with stable bodies of liquid water on its surface, like Earth.
| Mass | 2.210 Earth masses |
| Density | 5.660 grams per cubic centimeter |
| Radius | 1.290 Earth radiae |
| Semi-major Axis | 0.106 AU |
| Eccentricity | 0.11 |
| Orbital Period | 24.159 days |
| Discovery Method | Transit |
| Discovery Facility | K2 |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2016-09 |
| Reference | Crossfield et al. 2016 |