KELT-20
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cygnus |
| Right ascension | 19h 38m 38.735s |
| Declination | +31° 31′ 09.22″ |
| Apparent magnitude (V) | 7.58 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | A2V |
| Variable type | planetary transit |
| Astrometry | |
| Proper motion (μ) | RA: 3.096±0.068 mas/yr Dec.: −6.157±0.075 mas/yr |
| Parallax (π) | 7.3015±0.0433 mas |
| Distance | 447 ± 3 ly (137.0 ± 0.8 pc) |
| Absolute magnitude (MV) | +2.30 |
| Details | |
| Mass | 2.3 M☉ |
| Radius | 1.6 R☉ |
| Luminosity | 15.7 L☉ |
| Surface gravity (log g) | 4.38 cgs |
| Temperature | 9,032 K |
| Metallicity [Fe/H] | −0.02±0.07 dex |
| Age | 200 Myr |
| Other designations | |
| HD 185603, HIP 96618, MASCARA-2, KELT-20 | |
| Database references | |
| SIMBAD | data |
KELT-20, also known as MASCARA-2, is an A2 main sequence star in the constellation of Cygnus, about 447 light years away.