Kepler-24

Kepler-24 is a star in the northern constellation of Lyra. It is located at the celestial coordinates: Right Ascension 19h 21m 39.0s, Declination +38° 20 37.[6] With an apparent visual magnitude of 15.5,[3] this star is too faint to be seen with the naked eye.

Kepler-24
Observation data
Epoch J2000      Equinox J2000
Constellation Lyra[1]
Right ascension 19h 21m 39.1858s[2]
Declination +38° 20 37.450[2]
Apparent magnitude (V) 15.5[3]
Characteristics
Spectral type G5[4]
Astrometry
Proper motion (μ) RA: −2.227±0.044[2] mas/yr
Dec.: −1.825±0.042[2] mas/yr
Parallax (π)0.8361 ± 0.0238 mas[2]
Distance3,900 ± 100 ly
(1,200 ± 30 pc)
Details
Mass1.11[3] M
Radius1.07 ± 0.16[3] R
Luminosity0.79 ± 0.04[3] L
Temperature5800 ± 200[3] K
Metallicity [Fe/H]–0.24 ± 0.40[3] dex
Rotation10.080±0.154 days[5]
Other designations
KOI-1102, KIC 3231341, 2MASS J19213918+3820375, Gaia DR2 2052823535171095296
Database references
SIMBADdata
KICdata

Planetary system

Two planetary candidates b and c were discovered in 2011, and were confirmed in 2012 together with d and e.[7]

The Kepler-24 planetary system[4]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
d 0.051 4.244384 1.67 R🜨
b < 1.6 MJ 0.106 8.1453 2.4 R🜨
c < 1.6 MJ 0.068 12.3335 2.8 R🜨
e 0.138 18.998355 2.78 R🜨

References

  1. "Lyra – constellation boundary", The Constellations, International Astronomical Union, retrieved 2011-12-15
  2. 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.
  3. Kepler-24b, NASA Ames Research Center, archived from the original on 2012-05-03, retrieved 2011-12-06
  4. Schneider, Jean, "Star: Kepler-24", Extrasolar Planets Encyclopaedia, Paris Observatory, archived from the original on 2012-05-05, retrieved 2013-12-18
  5. 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.
  6. "Kepler Discoveries". 2011-12-05. Archived from the original on 2010-05-27.
  7. Ford, Eric B.; Fabrycky, Daniel C.; Steffen, Jason H.; Carter, Joshua A.; Fressin, Francois; Holman, Matthew J.; Lissauer, Jack J.; Moorhead, Althea V.; Morehead, Robert C.; Ragozzine, Darin; Rowe, Jason F.; Welsh, William F.; Allen, Christopher; Batalha, Natalie M.; Borucki, William J.; Bryson, Stephen T.; Buchhave, Lars A.; Burke, Christopher J.; Caldwell, Douglas A.; Charbonneau, David; Clarke, Bruce D.; Cochran, William D.; Désert, Jean-Michel; Endl, Michael; Everett, Mark E.; Fischer, Debra A.; Gautier III, Thomas N.; Gilliland, Ron L.; Jenkins, Jon M.; et al. (2012), "Transit Timing Observations Fromkepler. Ii. Confirmation of Two Multiplanet Systems Via a Non-Parametric Correlation Analysis", The Astrophysical Journal, 750 (2): 113, arXiv:1201.5409, Bibcode:2012ApJ...750..113F, doi:10.1088/0004-637X/750/2/113, S2CID 4528963


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