Kepler-78b
Kepler-78b (formerly known as KIC 8435766 b) is an exoplanet orbiting around the star Kepler-78. At the time of its discovery, it was the exoplanet most similar to Earth in terms of mass, radius, and mean density.
Size comparison of Kepler-78b with Earth | |
| Discovery | |
|---|---|
| Discovery date | November 5, 2013 |
| Transit and reflection/emission modulations (Kepler Mission) | |
| Designations | |
| KIC 8435766 b | |
| Orbital characteristics | |
| 0.01 AU (1.5 million km; 0.93 million mi) | |
| 0.355007 days (8.5202 h) | |
| Inclination | 81 +6 −9° |
| Star | Kepler-78 |
| Physical characteristics | |
Mean radius | 1.12 R🜨 |
| Mass | 1.69-1.85 ME |
Mean density | 5.3-5.6 g cm−3 |
| 11 m/s2 (25 mph/s) | |
| Temperature | 2,300 to 3,100 K (2,000 to 2,800 °C; 3,700 to 5,100 °F) |
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