| Discovery | |
|---|---|
| Discovered by | Kepler team |
| Discovery date | 20 December 2011 |
| Transit (Kepler Mission) | |
| Orbital characteristics | |
| 0.3453 AU (51,660,000 km) | |
| Eccentricity | <0.60 |
| 77.61184d | |
| Inclination | 89.570 |
| Star | Kepler-20 (KOI-070) |
| Physical characteristics | |
| 2.75+0.17 −0.30R🜨 | |
| Mass | <20.1ME |
Meandensity | <4.07gcm−3 |
| Temperature | 369 K (96 °C; 205 °F) |
Kepler-20d is anexoplanet orbitingKepler-20. It has a mass and radius similar toNeptune. Despite being the furthest planet from the star, it has an orbit similar toMercury, meaning that it is aHot Neptune. Along with the other four planets in the system, Kepler-20d was announced on December 20, 2011.
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