The Kepler-520 system contains 2 exoplanets. It is located 2034.89 light years away from the solar system.
| Mass | 1.1 solar masses |
| Radius | 1.09 solar radiae |
| Temperature | 6112 kelvin |
| Stellar Metallicity | -0.03 decimal exponent |
| Age | 2.04 billion years |
At 3.403 Earth masses, Kepler-520 b 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 | 3.390 Earth masses |
| Density | 4.070 grams per cubic centimeter |
| Radius | 1.660 Earth radiae |
| Semi-major Axis | 0.144 AU |
| Eccentricity | 0 |
| Orbital Period | 19.674 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2016-05 |
| Reference | Morton et al. 2016 |
At less than 1.5 Earth masses, Kepler-520 c is a terrestrial planet, much like the terrestrial planets we find in our solar system, namely Mercury, Venus, Earth and Mars.
| Mass | 1.240 Earth masses |
| Density | 5.560 grams per cubic centimeter |
| Radius | 1.070 Earth radiae |
| Semi-major Axis | 0.0594 AU |
| Eccentricity | 0 |
| Orbital Period | 5.211 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2016-05 |
| Reference | Morton et al. 2016 |