Kepler-26
 The Kepler-26 system | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lyra[1] |
| Right ascension | 18h 59m 45.8407s[2] |
| Declination | +46° 33′ 59.438″[2] |
| Apparent magnitude (V) | 15.473[3] |
| Characteristics | |
| Spectral type | M0V[4] |
| Astrometry | |
| Proper motion (μ) | RA: 9.540±0.053[2] mas/yr Dec.: −13.961±0.055[2] mas/yr |
| Parallax (π) | 2.9537 ± 0.0270[2] mas |
| Distance | 1,100 ± 10 ly (339 ± 3 pc) |
| Details | |
| Mass | 0.65[3] M☉ |
| Radius | 0.59[3] R☉ |
| Luminosity | 0.1[3] L☉ |
| Temperature | 4500[3] K |
| Metallicity [Fe/H] | -0.21[3] dex |
| Rotation | 17.918±0.005 days[5] |
| Rotational velocity (v sin i) | 1.9[3] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Kepler-26 is a star in the northern constellation of Lyra. It is located at the celestial coordinates: Right Ascension 18h 59m 45.8407s Declination +46° 33′ 59.438″.[2] With an apparent visual magnitude of 15.5,[3] this star is too faint to be seen with the naked eye.
Planetary system[]
The two planets, Kepler-26b and Kepler-26c, were discovered by transit method in late 2011,[6] and classified as small (sub-Neptune) gas giants in 2016.[7] In 2012, the planetary candidate Kepler-26d was also detected, and confirmed in 2014.[8] The planet Kepler-26e was discovered on a much wider orbit in 2014.[9]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| d | — | 0.039 | 3.543919 | — | — | 1.2 R
|