Article · Wikipedia archive · Last revised Jul 5, 2026

Kepler-24

Kepler-24 is a star in the northern constellation of Lyra. It is located at the celestial coordinates: Right Ascension 19h 21m 39.1857s, Declination +38° 20′ 37.450″. With an apparent visual magnitude of 15.5, this star is too faint to be seen with the naked eye.

Last revised
Jul 5, 2026
Read time
≈ 2 min
Length
444 w
Citations
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Source
Wikipedia ↗
Kepler-24
Observation data
Epoch J2000      Equinox J2000
Constellation Lyra1
Right ascension 19h 21m 39.1857s2
Declination +38° 20′ 37.450″2
Apparent magnitude (V) 15.53
Characteristics
Evolutionary stage main sequence2
Spectral type G54
Astrometry
Proper motion (μ) RA: −2.153(22) mas/yr2
Dec.: −1.822(21) mas/yr2
Parallax (π)0.8312±0.0186 mas2
Distance3,920 ± 90 ly
(1,200 ± 30 pc)
Details
Mass1.113 M☉
Radius1.07 ± 0.163 R☉
Luminosity0.79 ± 0.043 L☉
Temperature5800 ± 2003 K
Metallicity [Fe/H]–0.24 ± 0.403 dex
Rotation10.080±0.154 days5
Other designations
KOI-1102, KIC 3231341, 2MASS J19213918+3820375, Gaia DR2 2052823535171095296
Database references
SIMBADdata
Exoplanet Archivedata
KICdata
Comparative sizes of Sun and Kepler-24.
Comparative sizes of Sun and Kepler-24. source ↗

Kepler-24 is a star in the northern constellation of Lyra. It is located at the celestial coordinates: Right Ascension 19h 21m 39.1857s, Declination +38° 20′ 37.450″.2 With an apparent visual magnitude of 15.5,3 this star is too faint to be seen with the naked eye.

Planetary system

Two planetary candidates b and c were discovered in 2011, and were confirmed in 2012 together with d and e.6

The Kepler-24 planetary system4
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

References

  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. 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. 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, 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. 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