K2-24
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Scorpius |
| Right ascension | 16h 10m 17.6977s |
| Declination | −24° 59′ 25.261″ |
| Apparent magnitude (V) | 11.068±0.110 |
| Characteristics | |
| Evolutionary stage | subgiant |
| Spectral type | G3 |
| Apparent magnitude (J) | 9.635±0.024 |
| Apparent magnitude (H) | 9.294±0.022 |
| Apparent magnitude (K) | 9.180±0.021 |
| Variable type | Planetary transit |
| Astrometry | |
| Radial velocity (Rv) | 1.18±0.32 km/s |
| Proper motion (μ) | RA: −59.891±0.021 mas/yr Dec.: −58.702±0.014 mas/yr |
| Parallax (π) | 5.8273±0.0169 mas |
| Distance | 560 ± 2 ly (171.6 ± 0.5 pc) |
| Details | |
| Mass | 1.041+0.017 −0.016 M☉ |
| Radius | 1.185±0.011 R☉ |
| Surface gravity (log g) | 4.48±0.03 cgs |
| Temperature | 5726±65 K |
| Metallicity [Fe/H] | 0.41±0.05 dex |
| Age | 4.9±1.7 Gyr |
| Other designations | |
| Gaia DR2 6049750234317822208, EPIC 203771098, TYC 6784-837-1, 2MASS J16101770-2459251 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
K2-24 (also known as EPIC 203771098) is a metal-rich G3-type larger and more massive than the Sun, located 560 light-years (172 parsecs) away in the constellation Scorpius. Two confirmed transiting exoplanets are known to orbit this star. An attempt to detect stellar companions using adaptive optics imaging at the Keck telescope was negative however later observations using lucky imaging at the Danish 1.54 m telescope at La Silla Observatory detected a possible companion at 3.8 arcseconds distance from K2-24. This candidate companion being over 8 magnitudes fainter than K2-24 and with a color temperature of 5400 Kelvin, is inconsistent with a bound main sequence companion.