Kepler-30
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lyra[1] |
| Right ascension | 19h 01m 08.0747s[2] |
| Declination | +38° 56′ 50.219″[2] |
| Apparent magnitude (V) | 15.5[3] |
| Characteristics | |
| Spectral type | K[3] |
| Astrometry | |
| Proper motion (μ) | RA: 0.695±0.055[2] mas/yr Dec.: −4.761±0.052[2] mas/yr |
| Parallax (π) | 1.0657 ± 0.0321[2] mas |
| Distance | 3,060 ± 90 ly (940 ± 30 pc) |
| Details | |
| Mass | 0,99±0,08[4] M☉ |
| Radius | 0.95[4] R☉ |
| Temperature | 5498±54[4] K |
| Metallicity [Fe/H] | 0,18±0,27[4] dex |
| Rotation | 16.004±0.017 days[5] |
| Rotational velocity (v sin i) | 1,94±0,22[4] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Kepler-30 is a star in the northern constellation of Lyra. It is located at the celestial coordinates: Right Ascension 19h 01m 08.0747s Declination +38° 56′ 50.219″.[2] With an apparent visual magnitude of 15.5,[3] this star is too faint to be seen with the naked eye. Kepler-30 is exhibiting a strong starspot activity.[6]
Planetary system[]
Three planets of Kepler-30 were detected by the transit method in 2011.[7] The planets are strongly interacting each other, with transit times variability exceeding one hour for each consecutive orbit.[8] Due irregularity of orbits, confirmation of planetary system was delayed until 2012.[9] The planetary periods are close to 1:2:5 orbital resonance but are not resonant, producing an extremely complex orbital dynamics.[10]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 9.2±0.1 M
|