Kepler-296
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Draco |
Right ascension | 19h 06m 09.602s[1] |
Declination | +49° 26′ 14.37″[1] |
Characteristics | |
Spectral type | K7 V + M1 V[2] |
Astrometry | |
Proper motion (μ) | RA: 2.0[3] mas/yr Dec.: −8.0[3] mas/yr |
Distance | 226.0+28.0 −18.0[4] pc |
Details[5] | |
Kepler-296 A | |
Mass | 0.498+0.067 −0.087 M☉ |
Radius | 0.480+0.066 −0.087 R☉ |
Surface gravity (log g) | 4.774+0.091 −0.059 cgs |
Temperature | 3740±130 K |
Metallicity [Fe/H] | −0.08+0.28 −0.30 dex |
Kepler-296 B | |
Mass | 0.326+0.070 −0.079 M☉ |
Radius | 0.322+0.060 −0.068 R☉ |
Surface gravity (log g) | 4.993+0.087 −0.063 cgs |
Temperature | 3440±75 K |
Other designations | |
Database references | |
SIMBAD | data |
KIC | data |
Kepler-296 is a binary star system[5] in the constellation Draco. The primary star appears to be a late K-type main-sequence star, while the secondary is a red dwarf.[2]
Planetary system[]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/2/21/Kepler296scale.png/220px-Kepler296scale.png)
The following plot shows the approximate sizes of the planets in this system compared to planets in the Solar System.[7]
Five exoplanets have been detected around the system; all are believed to be orbiting the primary star rather than its dimmer companion.[5] Two planets in particular, Kepler-296e and Kepler-296f, are likely located in the habitable zone.[5] For planetary system to remain stable, no additional giant planets can be located up to orbital radius 10.1 AU.[8]
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | — | 0.079 | 10.864384 | 0.33 | — | 1.61 R |