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.
| 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[2] mas |
| Distance | 3,900 ± 100 ly (1,200 ± 30 pc) |
| Details | |
| Mass | 1.11[3] M☉ |
| Radius | 1.07 ± 0.16[3] R☉ |
| Luminosity | 0.79 ± 0.04[3] L☉ |
| Temperature | 5800 ± 200[3] K |
| Metallicity [Fe/H] | –0.24 ± 0.40[3] dex |
| Rotation | 10.080±0.154 days[5] |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Planetary system
Two planetary candidates b and c were discovered in 2011, and were confirmed in 2012 together with d and e.[7]
| 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
- "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.
- Kepler-24b, NASA Ames Research Center, retrieved 2011-12-06
- Schneider, Jean, "Star: Kepler-24", Extrasolar Planets Encyclopaedia, Paris Observatory, archived from the original on 2012-05-05, retrieved 2013-12-18
- 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.
- "Kepler Discoveries". 2011-12-05.
- 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, doi:10.1088/0004-637X/750/2/113, S2CID 4528963
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