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Kepler-30

Coordinates: Sky map 19h 01m 08.076s, +38° 56′ 50.26″
From Wikipedia, the free encyclopedia
Kepler-30
Observation data
Epoch J2000      Equinox ICRS
Constellation Lyra[1]
Right ascension 19h 01m 08.0746s[2]
Declination +38° 56′ 50.218″[2]
Apparent magnitude (V) 15.5[3]
Characteristics
Evolutionary stage main sequence[2]
Spectral type G3V[3]
Astrometry
Proper motion (μ) RA: 0.743(29) mas/yr[2]
Dec.: −4.737(28) mas/yr[2]
Parallax (π)1.1113±0.0241 mas[2]
Distance2,930 ± 60 ly
(900 ± 20 pc)
Details
Mass0.99±0.08[4] M☉
Radius0.95[4] R☉
Luminosity0.58[5] L☉
Surface gravity (log g)4.53[5] cgs
Temperature5,498±54[4] K
Metallicity [Fe/H]0.18±0.27[4] dex
Rotation16.004±0.017 days[6]
Rotational velocity (v sin i)1.94±0.22[4] km/s
Age1.9[5] Gyr
Other designations
KOI-806, KIC 3832474, UCAC2 45365178, 2MASS J19010807+3856502, SDSS J190108.07+385650.2
Database references
SIMBADdata
Exoplanet Archivedata
KICdata

Kepler-30 is a star in the northern constellation of Lyra. It is located at the celestial coordinates: Right Ascension 19h 01m 08.0746s Declination +38° 56′ 50.218″.[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.[7]

Planetary system

[edit]

Three planets of Kepler-30 were detected by the transit method in 2011.[8] The planets are strongly interacting each other, with transit times variability exceeding one hour for each consecutive orbit.[9] Due to the irregularity of orbits, confirmation of the planetary system was delayed until 2012.[10] The planetary periods are close to 1:2:5 orbital resonance but are not resonant, producing an extremely complex orbital dynamics.[11]

The Kepler-30 planetary system[12]
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

[edit]
  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
  2. 1 2 3 4 5 6 7 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.
  3. 1 2 3 Schneider, Jean, "Star: Kepler-30", Extrasolar Planets Encyclopaedia, archived from the original on 2012-05-05, retrieved 2013-12-18
  4. 1 2 3 4 5 Kepler-30b, NASA Ames Research Center, archived from the original on 2012-05-03, retrieved 2011-12-06
  5. 1 2 3 Mathur, Savita; Claytor, Zachary R.; Santos, Ângela R. G.; García, Rafael A.; Amard, Louis; Bugnet, Lisa; Corsaro, Enrico; Bonanno, Alfio; Breton, Sylvain N.; Godoy-Rivera, Diego; Pinsonneault, Marc H.; Van Saders, Jennifer (2023). "Magnetic Activity Evolution of Solar-like Stars. I. S ph-Age Relation Derived from Kepler Observations". The Astrophysical Journal. 952 (2): 131. arXiv:2306.11657. Bibcode:2023ApJ...952..131M. doi:10.3847/1538-4357/acd118.
  6. ↑ 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.
  7. ↑ 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
  8. ↑ 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.
  9. ↑ 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
  10. ↑ Fabrycky, Daniel C.; et al. (2012), "Transit Timing Observations from Kepler. IV. Confirmation of Four 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
  11. ↑ Detection of Laplace-resonant three-planet systems from transit timing variations
  12. ↑ 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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