Kepler-30c
Kepler-30
Yellow star in the constellation Lyra
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]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
| 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 | G3V[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 mas[2] |
| 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 |
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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 to the irregularity of orbits, confirmation of the 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]
More information Companion (in order from star), Mass ...
| 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🜨 |
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- "Lyra – constellation boundary", The Constellations, International Astronomical Union, retrieved 2011-12-15
- Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 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
- 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.