| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lyra |
| Right ascension | 19 01 08.0746 |
| Declination | +38° 56′ 50.218″ |
| Apparent magnitude (V) | 15.5 |
| Characteristics | |
| Spectral type | G3V |
| Astrometry | |
| Proper motion (μ) | RA: 0.743(29) mas/yr Dec.: −4.737(28) mas/yr |
| Parallax (π) | 1.1113 ± 0.0241 mas |
| Distance | 2,930 ± 60 ly (900 ± 20 pc) |
| Details | |
| Mass | 0,99±0,08 M☉ |
| Radius | 0.95 R☉ |
| Temperature | 5498±54 K |
| Metallicity | 0,18±0,27 dex |
| Rotation | 16.004±0.017 days |
| Rotational velocity (v sin i) | 1,94±0,22 km/s |
| Other designations | |
| KOI-806, KIC 3832474, UCAC2 45365178, 2MASS J19010807+3856502, SDSS J190108.07+385650.2 | |
| 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 19 01 08.0746 Declination +38° 56′ 50.218″. With an apparent visual magnitude of 15.5, this star is too faint to be seen with the naked eye. Kepler-30 is exhibiting a strong starspot activity.
Planetary system
Three planets of Kepler-30 were detected by the transit method in 2011. The planets are strongly interacting each other, with transit times variability exceeding one hour for each consecutive orbit. Due to the irregularity of orbits, confirmation of the planetary system was delayed until 2012. The planetary periods are close to 1:2:5 orbital resonance but are not resonant, producing an extremely complex orbital dynamics.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 9.2±0.1 M🜨 | 0.18479±0.000004 | 29.2187±0.0009 | 0.0770±0.0003 | 89.51±0.32° | 3.75±0.18 R🜨 |
| c | 536±5 M🜨 | 0.29977±0.000001 | 60.32503±0.00010 | 0.0115±0.0005 | 89.74±0.02° | 11.98±0.28 R🜨 |
| d | 23.7±1.3 M🜨 | 0.53178±0.00001 | 142.642±0.006 | 0.0272±0.0024 | 89.81±0.02° | 8.79±0.13 R🜨 |
References
- "Lyra – constellation boundary", The Constellations, International Astronomical Union, retrieved 2011-12-15
- ^ Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ Schneider, Jean, "Star: Kepler-30", Extrasolar Planets Encyclopaedia, archived from the original on 2012-05-05, retrieved 2013-12-18
- ^ Kepler-30b, NASA Ames Research Center, archived from the original on 2012-05-03, retrieved 2011-12-06
- McQuillan, A.; Mazeh, T.; Aigrain, S. (2013). "Stellar Rotation Periods of The Kepler objects of Interest: A Dearth of Close-In Planets Around Fast Rotators". The Astrophysical Journal Letters. 775 (1). L11. arXiv:1308.1845. Bibcode:2013ApJ...775L..11M. doi:10.1088/2041-8205/775/1/L11.
- Sanchis-Ojeda, Roberto; Fabrycky, Daniel C.; Winn, Joshua N.; Barclay, Thomas; Clarke, Bruce D.; Ford, Eric B.; Fortney, Jonathan J.; Geary, John C.; Holman, Matthew J.; Howard, Andrew W.; Jenkins, Jon M.; Koch, David; Lissauer, Jack J.; Marcy, Geoffrey W.; Mullally, Fergal; Ragozzine, Darin; Seader, Shawn E.; Still, Martin; Thompson, Susan E. (2012), "Alignment of the stellar spin with the orbits of a three-planet system", Nature, 487 (7408): 449–453, arXiv:1207.5804, Bibcode:2012Natur.487..449S, doi:10.1038/nature11301, PMID 22836999, S2CID 685995
- Borucki, William J.; et al. (2011). "Characteristics of Planetary Candidates Observed by Kepler. II. Analysis of the First Four Months of Data". The Astrophysical Journal. 736 (1). 19. arXiv:1102.0541. Bibcode:2011ApJ...736...19B. doi:10.1088/0004-637X/736/1/19.
- Tingley, B.; Palle, E.; Parviainen, H.; Deeg, H. J.; Zapatero Osorio, M. R.; Cabrera-Lavers, A.; Belmonte, J. A.; Rodriguez, P. M.; Murgas, F.; Ribas, I. (2011), "Detection of transit timing variations in excess of one hour in the Kepler multi-planet candidate system KOI 806 with the GTC", Astronomy & Astrophysics, 536: L9, arXiv:1111.5107, Bibcode:2011A&A...536L...9T, doi:10.1051/0004-6361/201118264, S2CID 119226419
- Fabrycky, Daniel C.; Ford, Eric B.; Steffen, Jason H.; Rowe, Jason F.; Carter, Joshua A.; Moorhead, Althea V.; Batalha, Natalie M.; Borucki, William J.; Bryson, Steve; Buchhave, Lars A.; Christiansen, Jessie L.; Ciardi, David R.; Cochran, William D.; Endl, Michael; Fanelli, Michael N.; Fischer, Debra; Fressin, Francois; Geary, John; Haas, Michael R.; Hall, Jennifer R.; Holman, Matthew J.; Jenkins, Jon M.; Koch, David G.; Latham, David W.; Li, Jie; Lissauer, Jack J.; Lucas, Philip; Marcy, Geoffrey W.; Mazeh, Tsevi; et al. (2012), "TRANSIT TIMING OBSERVATIONS FROM Kepler : IV. CONFIRMATION OF 4 MULTIPLE PLANET SYSTEMS BY SIMPLE PHYSICAL MODELS", The Astrophysical Journal, 750 (2): 114, arXiv:1201.5415, Bibcode:2012ApJ...750..114F, doi:10.1088/0004-637X/750/2/114, S2CID 9075167
- Detection of Laplace-resonant three-planet systems from transit timing variations
- Panichi, F; et al. (2018). "The architecture and formation of the Kepler-30 planetary system". Monthly Notices of the Royal Astronomical Society. 478 (2): 2480–2494. arXiv:1707.04962. Bibcode:2018MNRAS.478.2480P. doi:10.1093/mnras/sty1071. S2CID 76654017.
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