Kepler-4b
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Exoplanet Kepler-4b |
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| Size comparison with exoplanets: Kepler-4b here between Jupiter and Earth | |
| Constellation | Dragon |
| Position equinox : J2000.0 |
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| Right ascension | 19h 02m 27.7s |
| declination | + 50 ° 08 ′ 08 ″ |
| Orbit data | |
| Central star | Kepler-4 |
| Major semi-axis | (0.0456 ± 0.0009) AE |
| Period of circulation | (3.21346 ± 0.00022) days |
| Further data | |
| Dimensions | 0.08 M J |
| distance | (550 ± 80) pc |
| history | |
| discovery | Kepler Mission |
| Date of discovery | 2010 |
Kepler-4b is an exoplanet in the constellation Draco . It orbits its central star Kepler-4 with a period of 3.234 days. Its radius and mass roughly correspond to the values of the planet Neptune . Kepler-4b thus has similar properties to Gliese 436 b or HAT-P-11b .
The exoplanet was within the Kepler mission of NASA with the transit method discovered.