Kepler-90
Kepler-90, also designated 2MASS J18574403+4918185, is a G-type star located about 2,790 light-years (855 pc) from Earth in the constellation of Draco. It is notable for possessing a planetary system that has the same number of observed planets as the Solar System.
Comparison of the Kepler-90 exoplanetary system with that of the Solar System (14 December 2017). | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Draco |
| Right ascension | 18h 57m 44.03831s |
| Declination | +49° 18′ 18.4965″ |
| Apparent magnitude (V) | 13.9 |
| Characteristics | |
| Spectral type | F9 IV/V |
| Astrometry | |
| Radial velocity (Rv) | −15.54±2.91 km/s |
| Proper motion (μ) | RA: −4.350(12) mas/yr Dec.: −3.256(14) mas/yr |
| Parallax (π) | 1.1695 ± 0.0112 mas |
| Distance | 2,790 ± 30 ly (855 ± 8 pc) |
| Details | |
| Mass | 1.2±0.1 M☉ |
| Radius | 1.2±0.1 R☉ |
| Luminosity | 1.7 L☉ |
| Surface gravity (log g) | 4.4 cgs |
| Temperature | 6,080+260 −170 K |
| Metallicity [Fe/H] | −0.12±0.18 dex |
| Rotational velocity (v sin i) | 4.6±2.1 km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| KIC | data |
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