HD 192699
HD 192699 is a yellow subgiant star located approximately 214 light-years away in the constellation of Aquila. It has the apparent magnitude of 6.45. Based on its mass of 1.68 solar, it was an A-type star when it was a main-sequence. In April 2007, a planet was announced orbiting the star, together with HD 175541 b and HD 210702 b.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 20h 16m 06.00415s |
| Declination | +04° 34′ 50.8613″ |
| Apparent magnitude (V) | 6.44 |
| Characteristics | |
| Spectral type | G8 IV |
| B−V color index | 0.867±0.006 |
| Astrometry | |
| Proper motion (μ) | RA: −41.239 mas/yr Dec.: −52.035 mas/yr |
| Parallax (π) | 13.8868 ± 0.0513 mas |
| Distance | 234.9 ± 0.9 ly (72.0 ± 0.3 pc) |
| Absolute magnitude (MV) | 2.36 |
| Details | |
| Mass | 1.26±0.19 M☉ |
| Radius | 4.41±0.21 R☉ |
| Luminosity | 12.26 L☉ |
| Surface gravity (log g) | 3.25 cgs |
| Temperature | 5,041 K |
| Metallicity [Fe/H] | −0.12 dex |
| Age | 3.2+1.2 −0.7 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
The star HD 192699 is named Chechia. The name was selected in the NameExoWorlds campaign by Tunisia, during the 100th anniversary of the IAU. Chechia is a flat-surfaced, traditional red wool hat.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b / Khomsa | ≥2.096±0.093 MJ | 1.063±0.049 | 340.94±0.92 | 0.082±0.041 | — | — |
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