Kepler-37
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lyra |
| Right ascension | 18h 56m 14.30760s |
| Declination | +44° 31′ 05.3896″ |
| Apparent magnitude (V) | 9.710 |
| Characteristics | |
| Spectral type | G8V |
| Astrometry | |
| Radial velocity (Rv) | −30.92±0.20 km/s |
| Proper motion (μ) | RA: −60.396 mas/yr Dec.: 48.657 mas/yr |
| Parallax (π) | 15.6253±0.0105 mas |
| Distance | 208.7 ± 0.1 ly (64.00 ± 0.04 pc) |
| Details | |
| Mass | 0.79+0.033 −0.03 M☉ |
| Radius | 0.789+0.0064 −0.0056 R☉ |
| Temperature | 5357±68 K |
| Metallicity [Fe/H] | −0.36±0.05 dex |
| Rotational velocity (v sin i) | 1.1 (± 1.1) km/s |
| Age | 7.6+3.4 −3.1 Gyr |
| Other designations | |
| KOI-245, KIC 8478994, TYC 3131-1199-1, BD+44 3020, 2MASS J18561431+4431052, GSC 03131-01199, Gaia DR2 2106674071344722688 | |
| Database references | |
| SIMBAD | data |
| KIC | data |
Kepler-37, also known as UGA-1785, is a G-type main-sequence star located in the constellation Lyra 209 light-years (64 parsecs) from Earth. It is host to exoplanets Kepler-37b, Kepler-37c, Kepler-37d and possibly Kepler-37e, all of which orbit very close to it. Kepler-37 has a mass about 80.3 percent of the Sun's and a radius about 77 percent as large. It has a temperature similar to that of the Sun, but a bit cooler at 5,357 K. It has about half the metallicity of the Sun. With an age of roughly 6 billion years, it is slightly older than the Sun, but is still a main-sequence star. Until January 2015, Kepler-37 was the smallest star to be measured via asteroseismology.