The Kepler-42 system contains 3 exoplanets. It is located 130.66 light years away from the solar system.
| Mass | 0.13 solar masses |
| Radius | 0.17 solar radiae |
| Temperature | 3068 kelvin |
| Stellar Metallicity | -0.33 decimal exponent |
| Age | 4.5 billion years |
At less than 1.5 Earth masses, Kepler-42 b is a terrestrial planet, much like the terrestrial planets we find in our solar system, namely Mercury, Venus, Earth and Mars.
| Mass | 0.399 Earth masses |
| Density | 4.620 grams per cubic centimeter |
| Radius | 0.780 Earth radiae |
| Semi-major Axis | 0.0116 AU |
| Eccentricity | 0.04 |
| Orbital Period | 1.214 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2012-03 |
| Reference | Muirhead et al. 2012 |
At less than 1.5 Earth masses, Kepler-42 c is a terrestrial planet, much like the terrestrial planets we find in our solar system, namely Mercury, Venus, Earth and Mars.
| Mass | 0.315 Earth masses |
| Density | 4.450 grams per cubic centimeter |
| Radius | 0.730 Earth radiae |
| Semi-major Axis | 0.006 AU |
| Eccentricity | 0 |
| Orbital Period | 0.453 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2012-03 |
| Reference | Muirhead et al. 2012 |
At less than 1.5 Earth masses, Kepler-42 d is a terrestrial planet, much like the terrestrial planets we find in our solar system, namely Mercury, Venus, Earth and Mars.
| Mass | 0.130 Earth masses |
| Density | 3.860 grams per cubic centimeter |
| Radius | 0.570 Earth radiae |
| Semi-major Axis | 0.0154 AU |
| Eccentricity | 0.02 |
| Orbital Period | 1.865 days |
| Discovery Method | Transit |
| Discovery Facility | Kepler |
| Discovery Telescope | 0.95 m Kepler Telescope |
| Discovery Instrument | Kepler CCD Array |
| Discovery Date | 2012-03 |
| Reference | Muirhead et al. 2012 |