Kepler-30
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Star Kepler-30 |
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| schematic size comparison between Kepler-30 (left) and the sun (right) | |||||
| AladinLite | |||||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | lyre | ||||
| Right ascension | 19 h 01 m 8.1 s | ||||
| declination | + 38 ° 56 ′ 50 ″ | ||||
| Typing | |||||
| Known exoplanets | 3 | ||||
| Astrometry | |||||
| Physical Properties | |||||
| Dimensions | 0.99 ± 0.08 M ☉ | ||||
| radius | 0.95 ± 0.12 R ☉ | ||||
| Effective temperature | 5498 ± 54 K | ||||
| Rotation time | approx. 16 d | ||||
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Other names and catalog entries |
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Kepler-30 is a Sun-like star orbited by three exoplanets .
Exoplanets
It could be proven that the three planets of the system (Kepler-30b, Kepler-30c and Kepler-30d) orbit in the equatorial plane of the star, as in our solar system.
Kepler-30b has an orbital period of 29.3 days and is the smallest known companion with about 11 Earth masses and 4 Earth radii (comparable to Neptune). Kepler-30c orbits its sun in about 60 days. It is the most massive and largest known exoplanet of the system with about 2 Jupiter's masses and a radius of about 12 Earth radii. Kepler-30d has an orbital period of 143 days, a mass of around 23 Earth masses and a radius of 9 Earth radii.
literature
- Fabrycky et al .: Transit Timing Observations from Kepler: IV. Confirmation of 4 Multiple Planet Systems by Simple Physical Models ; in: The Astrophysical Journal 750 (2)
- Sanchis-Ojeda et al .: Alignment of the stellar spin with the orbits of a three-planet system ; in: Nature, 487, 449-453 (2012)
Individual evidence
- ↑ Simbad. simbad.u-strasbg.fr, July 26, 2012, accessed on July 26, 2012 .
- ↑ a b c Kepler-30b. exoplanet.eu, July 26, 2012, accessed July 26, 2012 .
- ↑ Exo-planetary system is similar to the solar system. Spiegel Online, July 26, 2012, accessed July 26, 2012 .