KELT-1
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Andromeda |
| Right ascension | 00h 01m 26.9168s |
| Declination | +39° 23′ 01.784″ |
| Apparent magnitude (V) | 10.63 |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | F5 |
| Astrometry | |
| Radial velocity (Rv) | 1.296 km/s |
| Proper motion (μ) | RA: −9.696 mas/yr Dec.: −7.823 mas/yr |
| Parallax (π) | 3.6836±0.0144 mas |
| Distance | 885 ± 3 ly (271 ± 1 pc) |
| Position (relative to KELT-1) | |
| Component | KELT-1B |
| Epoch of observation | 2012 |
| Angular distance | 0.588±0.001″ |
| Position angle | 157.4±0.2° |
| Projected separation | 154±8 AU |
| Details | |
| Mass | 1.324±0.026 M☉ |
| Radius | 1.462+0.037 −0.024 R☉ |
| Luminosity | 3.11±0.05 L☉ |
| Surface gravity (log g) | 4.229+0.012 −0.019 cgs |
| Temperature | 6,518±50 K |
| Metallicity [Fe/H] | 0.008±0.073 dex |
| Rotational velocity (v sin i) | 55 km/s |
| Age | 1.75±0.25 Gyr |
| Other designations | |
| TOI-1476, TYC 2785-2130-1, GSC 02785-02130, 2MASS J00012691+3923017 | |
| Database references | |
| SIMBAD | data |
KELT-1 is a F-type main-sequence star. Its surface temperature is 6518±50 K. It is similar to the Sun in its concentration of heavy elements, with a metallicity Fe/H index of 0.008±0.073, but is much younger at an age of 1.75±0.25 billion years. The star is rotating very rapidly.
A red dwarf stellar companion at a projected separation of 154±8 AU was detected in 2012, simultaneously with a planetary companion.