Kepler-29 is a Sun-like star in the northern constellation of Cygnus. It is located at the celestial coordinates: Right Ascension 19h 53m 23.6018s, Declination +47° 29′ 28.437″.[2] With an apparent visual magnitude of 15.456,[3] this star is too faint to be seen with the naked eye. It is a solar analog, having a close mass, radius, and temperature as the Sun. Currently the age of the star has not been determined due to its 2780 light-year (850 parsecs) distance. As of 2016 no Jovian exoplanets of 0.9–1.4 MJ have been found at a distance of 5 AU. [7]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cygnus[1] |
| Right ascension | 19h 53m 23.6018s[2] |
| Declination | +47° 29′ 28.437″[2] |
| Apparent magnitude (V) | 15.456±0.025[3] |
| Characteristics | |
| Spectral type | G5V[4] |
| Astrometry | |
| Proper motion (μ) | RA: 6.487(29) mas/yr[2] Dec.: 16.183(24) mas/yr[2] |
| Parallax (π) | 1.1276 ± 0.0229 mas[2] |
| Distance | 2,890 ± 60 ly (890 ± 20 pc) |
| Details | |
| Mass | 0.761+0.024 −0.028[5] M☉ |
| Radius | 0.732+0.033 −0.031[5] R☉ |
| Surface gravity (log g) | 4.6±0.1[5] cgs |
| Temperature | 5378±60[5] K |
| Metallicity [Fe/H] | −0.44±0.04[5] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Planetary system
In 2011 an analysis of the first four months of data from the Kepler space telescope detected 1235 planetary candidates two of which orbited this star.[8] Later study of the transit-timing variations of the system lead to the confirmation of both planets.[9] The planetary orbits are lying in Orbital resonance to each other, with orbital period ratio being exactly 7:9.[10]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 5.0+1.5 −1.3 M🜨 |
0.09 | 10.33966+0.00015 −0.00017 |
— | — | 2.55±0.12 R🜨 |
| c | 4.5±1.1 M🜨 | 0.11 | 13.28633+0.00031 −0.00027 |
— | — | 2.34+0.12 −0.11 R🜨 |
References
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